PUBLICATIONS:

1. Däppen, W. 1994, [Helioseismology: the Sun as a strongly-constrained, weakly-coupled plasma], in Proc. IAU Colloquium 147: The Equation of State in Astrophysics, (eds. G. Chabrier & E. Schatzman, Cambridge University Press), 368-393.

2. Vorontsov, S.V, Baturin, V.A., Gough, D.O. & Däppen, W. 1994, [Towards a helioseismic calibration of the equation of state of the plasma in the solar convective envelope], in Proc. IAU Colloquium 147: The Equation of State in Astrophysics, (eds. G. Chabrier & E. Schatzman, Cambridge University Press), 545-549.

3. Däppen, W. 1994, [Asteroseismologie: muziek van de sterren (in Dutch)], Zenit (Popular Dutch Astronomy Magazine), 346-347

4. Däppen, W. 1994, [Proceedings of the Joint Discussion 3 of the XXII General Assembly of the IAU], in Highlights of Astronomy 10, 319-348.

5. Däppen, W. 1994, [Equation of state issues in helioseismology], in Elementary Processes in Dense Plasmas, (eds. S. Ichimaru and S. Ogata, Addison Pub. Co.), 215-224.

6. Fröhlich, C., Romero, J., Roth, H., Wehrli, C., Andersen, B.N., Appourchaux, T., Domingo, V., Telljohann, U., Berthomieu, G., Delache, P., Provost, J., Toutain, T., Crommelynck, D.A., Chevallier, A., Däppen, W., Gough, D.O., Hoeksema, T., Jiménez, A., Roca Cortés, T., Herreros, J.M., Jones, A.R., Pap J.M., & Willson, R.C. 1995, [VIRGO: Experiment for helioseismology and solar irradiance monitoring], Solar Physics 162, 101-128.

7. Reiter, J., Rhodes, E.J., Jr., Däppen, W. & Korzennik, S.G. 1995, [Applications of massively-parallel computing in solar modeling], in GONG 1994: Helio- and Asteroseismology from Earth and Space, (eds. R.K. Ulrich, E.J. Rhodes & W. Däppen, PASP Conference Series), 140-143.

8. Däppen, W. 1995, [Solar Models and Oscillation Theory], in Proc. of Fourth SOHO Workshop Helioseismology: Vol. 1 (eds. V. Domingo et al ESA SP-376, ESTEC, Noordwijk), 19-29.

9. Däppen, W. & Nayfonov, A. 1995, [Some Aspects of Model Entropy Calculations[for Stellar Plasmas], in Proc. of Fourth SOHO Workshop Helioseismology: Vol. 2 (eds. V. Domingo et al ESA SP-376, ESTEC, Noordwijk), 19-20.

10. Perez, A. & Däppen, W. 1995, [Rigorous constraints on the ionization of elements in the solar center], in Proc. of Fourth SOHO Workshop Helioseismology, (eds. V. Domingo et al ESA SP-376, ESTEC, Noordwijk), 15-18.

11. Baturin, V., Däppen, W., Wang, X.-M. & Yang F. 1995, [Nonideal effects in the solar equation of state], in Proc. 32nd Liège International Astrophysical Colloquium `Stellar Evolution: What should be done', (eds. M. Gabriel and A. Noels, Université de Liège, Belgium), 33-38.

12. Christensen-Dalsgaard,J., Däppen, W., & the GONG team 1996, [The Current State of Solar Modeling] , Science 272, 1286-1292.

13. Däppen, W. 1996, [Helioseismic Diagnosis of the Equation of State], Bull. Astron. Soc. India 24, 151-160.

14. Däppen, W. 1996 [Observational constraints on the plasma of the solar interior], in Proc. International Conference on the Physics of Strongly Coupled Plasmas, (eds. W.-D. Kraeft & M. Schlanges, World Scientific, Singapore). Note: in the book, this publication was by mistake omitted; it was later supplied as a separate update.

15. Däppen, W. & Perez, A. 1997, [The current situation in the solar equation of state], in Sounding Solar and Stellar Interiors, Proceedings of IAU Symposium 181, Nice, (eds. J. Provost, F.X. Schmider, Kluwer Academic Publishers), 81.

16. Arndt, S., Däppen, W. & Nayfonov, A. 1998, [On density and temperature-dependent ground-state and continuum effects in the equation of state for stellar interiors], Astrophys. J. 498, 349-359.

17. Nayfonov, A. & Däppen, W. 1998 [The signature of the internal partition function in thermodynamical quantities of the solar interior], Astrophys. J. 499, 489-495.

18. Gong Z.-G., Däppen W. & Li Y. 1998, [Solar p-mode frequencies with updated atomic opacities], in A half century of stellar pulsation interpretations: A Tribute to Arthur N. Cox, (eds. P.A. Bradley & J.A. Guzik, ASP Conference Series Vol. 135), 266

19. Basu, S., Däppen, W. & Nayfonov, A. 1998, [Helioseismic signature of the presence of excited states in the adiabatic exponent], in Structure and Dynamics of the Interior of the Sun and Sun-like Stars, (eds. S.G. Korzennik & A. Wilson, ESA SP-418, ESA Publications Division, Noordwijk: The Netherlands), 435-438.

20. Gong Z.-G. & Däppen W. 1998, [The influence of low-temperature opacity on solar models and p-mode frequencies], in Structure and Dynamics of the Interior of the Sun and Sun-like Stars, (eds. S.G. Korzennik & A. Wilson, ESA SP-418, ESA Publications Division, Noordwijk: The Netherlands), 465-468.

21. Däppen W. 1998, [Helioseismic probing of fine effects in the equation of state], in Structure and Dynamics of the Interior of the Sun and Sun-like Stars, (eds. S.G. Korzennik & A. Wilson, ESA SP-418, ESA Publications Division, Noordwijk: The Netherlands), 445-448.

22. Jones, A., Belkic, D., Däppen, W., Lin C.-H. & Taylor, H. 1998, [Application of the filter diagonal spectral estimator in helioseismology], in Structure and Dynamics of the Interior of the Sun and Sun-like Stars, (eds. S.G. Korzennik & A. Wilson, ESA SP-418, ESA Publications Division, Noordwijk: The Netherlands), 249-252.

23. Däppen, W. 1998, [Input physics: equation of state], Space Science Reviews 85, 49-60.

24. Gong Z.-G., Däppen W. & Li Y. 1998, [The solar p-mode frequencies with OPAL and OP opacity], in The 10th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, (eds. B. Donahue & J. Bookbinder, ASP Conference Series Vol. 154), 761-766.

25. Gong Z.-G., Yuan Y.Q., Däppen W., Li Y. & Peng M.X. 1998, [Solar modeling and helioseismology in 1990's: I. Progress in solar structure], Progress in Astronomy 16, 287-304.

26. Gong Z.-G., Yuan Y.Q., Li Y., Däppen W. & Peng M.X. 1998, [Solar modeling and helioseismology in 1990's: II. Progress in solar oscillations], Progress in Astronomy 16, 305-320.

27. Däppen, W., Nayfonov, A. 1998 [The Sun: Strong constraints on a weakly-coupled plasma], in Strongly Coupled Coulomb Systems, (eds. G. Kalman, J.M. Rommel & K. Blagoev, Plenum), 327-330.

28. Charbonnel, C., Däppen, W., Bernasconi, P., Maeder, A., Meynet, G., Schaerer, D., & Mowlavi, N. 1999, [Grids of stellar models. VII. From 0.4 to 1.0 solar mass at Z=0.020 and Z=0.001, with the MHD equation of state], Astron. Astrophys. Suppl. Ser. 135, 405-413.

29. Basu, S., Däppen, W. & Nayfonov, A. 1999 [Helioseismic analysis of the hydrogen partition function in the solar interior], Astrophys. J. 518, 985-993.

30. Kraeft, W.-D., Arndt, S., Däppen, W. & Nayfonov, A. 1999 [A comment on ``On density and temperature-dependent ground-state and continuum effects in the equation of state for stellar interiors'' Astrophys. J. 516, 369-370.

31. Nayfonov, A., Däppen, W., Hummer, D.G. & Mihalas, D.M. 1999, [The MHD equation of state with post-Holtsmark microfield distributions], Astrophys. J. 526, 451-464.

32. Däppen, W. 2000, [Atoms and Molecules] in Astrophysical Quantities, 4th Edition (ed. A. Cox, American Institute of Physics [invited chapter]), 27-51.

33. Christensen-Dalsgaard, J., Däppen, W., Dziembowski, W.A. & Guzik, J.A. 2000, [An introduction to helioseismology], in Proc. Variable stars as important astrophysical tools (ed. C. Ibanoglu, NATO Advanced Study Institute, Çesme, Turkey; Kluwer), 59-167.

34. Däppen, W. & Guzik, J.A. 2000, [Astrophysical opacity and equation of state], in Proc. Variable stars as important astrophysical tools (ed. C. Ibanoglu, NATO Advanced Study Institute, Çesme, Turkey; Kluwer), 177-212.

35. Däppen, W., Nayfonov, A. 2000 [The Sun as an equation-of-state laboratory], Astrophys. J. Suppl. 135, 405-413.

36. Baturin, V.A., Däppen, W., Gough D.O. & Vorontsov, S.V. 2000 [Seismology of the solar envelope: sound-speed gradient in the convection zone], Mon. Not. R. astr. Soc. 316, 71-83.

37. Lin, C.-H. & Däppen, W. 2000, [Investigating the excitation of acoustic modes using homomorphic deconvolution], Solar Physics 193, 357-364.

38. Gong, Z.-G. & Däppen, W. 2000, [Upgrading the MHD Equation of State to Include Relativistic Electrons], in The Impact of Large-scale Surveys on Pulsating Star Research, (eds. L. Szabados & D.W. Kurtz, ASP Conference Series Vol. 203), 388-389.

39. Gong, Z.-G., Däppen, W. & Zejda, L. 2000, [MHD Equation of State with Relativistic Electrons], Astrophys. J. 546, 1178.

40. Däppen, W. 2000, [Solar Interior: Equation of State and Opacity], in Encyclopedia of Astronomy and Astrophysics, (Institute of Physics [invited chapter]).

41. Däppen, W. 2000, [Stellar Thermodynamics], in Encyclopedia of Astronomy and Astrophysics, (Institute of Physics [invited chapter]).

42. Celebonovic, V. & Däppen, W. 2000, [The plasma-solid transition: two simple examples] in Contributed papers of the 20th SPIG Conference, (ed. Z.Lj.Petrovic, M.M.Kuraica, N.Bibic and G.Malovic), Inst. of Physics, Faculty of Physics and INN. Vinca, Beograd, Yugoslavia), 527.

43. Houdek G., Chaplin W.J., Appourchaux T., Christensen-Dalsgaard J., Däppen W., Elsworth Y., Gough D.O., Isaak G.R., New R., & Rabello-Soares M.C. 2000, [Changes in convective properties over the solar cycle: effect effect on p-mode damping rates], Mon. Not. R. astr. Soc. 327, 483.

44. Lin, C.-H. & Däppen, W. 2001, [Extracting the excitation function of solar oscillations by means of deconvolution], in Proc. SOHO 10/GONG 2000 Workshop, (ESA SP-464, ESA Publications Division, Noordwijk: The Netherlands), 649.

45. Lin, C.-H. & Däppen, W. 2001, [Inversion for the adiabatic gradient gamma1 to examine equation-of-state effects], in Proc. SOHO 10/GONG 2000 Workshop, (ESA SP-464, ESA Publications Division, Noordwijk: The Netherlands), 527.

46. Gong, Z.-G., Däppen, W. & Zejda, L. 2001 [MHD Equation of State with Relativistic Electrons], Astrophys. J. 546, 1178.

47. Däppen, W. 2001, [Thermodynamics from the Sun], Contrib. Plasma Phys. 41, 291-294.

48. Gong, Z.-G., Zejda, L., Däppen, W. & Aparicio J.M. 2001 [Generalized Fermi-Dirac Functions and Derivatives: Properties and Evaluation], Comp. Phys. Commun. 136, 294-309.

49. Gong, Z.-G., Däppen, W. & Nayfonov, A. 2001, [Effects of Heavy Elements and Excited States in the Equation of State of the Solar Interior], Astrophys. J. 563, 419-433.

50. Däppen, W. 2002, [Heliseismic Studies of Dense Plasmas], in Inertial Fusion Science Applications 2001, (eds. K.A. Tanaka, D.D. Meyerhofer & J. Meyer-ter-Vehn, Elsevier, 2002), 946-951.

51. Celebonovic, V. Däppen, W. 2002, [The plasma-solid transition:some implications in astrophysics], Serb. Astron. J. 165, 23-26.

52. Däppen, W.,\ 2003, [Solar constraints on the equation of state], in Astrophysical Fluid Dynamics, (eds. M.J. Thompson & J. Christensen-Dalsgaard, Cambridge University Press), 179-191.

53. Liang, A. & Däppen, W. 2003, [Modifications of the Equation of State to Achieve Desired Changes in Thermodynamic Quantities], in Proceedings of SOHO 12 / GONG+ 2002. Local and Global Helioseismology: the Present and Future, (ed. H. Sawaya-Lacoste, ESA SP-517 , Noordwijk), 333-336.

54. Lin, C.H., & Däppen, W. 2003, [Helioseismic Constraints on the Chemical Composition and the Equation of State], in Proceedings of SOHO 12 / GONG+ 2002. Local and Global Helioseismology: the Present and Future, (ed. H. Sawaya-Lacoste, ESA SP-517 , Noordwijk), 337-340.

55. Lin, C.H. & Däppen, W. 2003, [Investigating Inversion Uncertainties Resulting from Mode Selections], in Proceedings of SOHO 12 / GONG+ 2002. Local and Global Helioseismology: the Present and Future, (ed. H. Sawaya-Lacoste, ESA SP-517 , Noordwijk), 341-344.

56. Baturin, V.A. & Däppen, W. 2003, [Equation of State for the Internal Structure of Solar-Type Stars], Astronomy Reports 47 No. 8, 685-693 (translated from Astronomicheskii Zhurnal, 80, No. 8, 744-752).

57. Däppen, W. 2004, [Equations of state for solar and stellar modeling], in Equation-of-State and Phase-Transition Issues in Models of Ordinary Astrophysical Matter, (eds. V. Celebonovic, W. D\"appen \& D. Gough, AIP Conference Proceedings 731, Melville, New York), 3

58. Lin, C.-H. & Däppen, W. 2004, [Isolating the effects of chemical composition in the equation of state], in Equation-of-State and Phase-Transition Issues in Models of Ordinary Astrophysical Matter, (eds. V. Celebonovic, W. D\"appen \& D. Gough, AIP Conference Proceedings 731, Melville, New York), 219.

59. Däppen, W. 2004, [Phenomenological and rigorous equations of state for solar and stellar modeling], in Helio- and Asteroseismology: Towards a Golden Future, Proc. SOHO 14/GONG 2004 Workshop, (ed. D. Danesy, ESA SP-559, Noordwijk, The Netherlands), 261.

60. Däppen, W. & Lin, C.-H. 2004, [The chemical composition and equation of state of the Sun inferred from seismic models through an inversion procedure], in Helio- and Asteroseismology: Towards a Golden Future, Proc. SOHO 14/GONG 2004 Workshop, (ed. D. Danesy, ESA SP-559, Noordwijk, The Netherlands), p. 400.

61. Liang, A. & Däppen, W. 2004, [Emulating the OPAL equation of state], in Helio- and Asteroseismology: Towards a Golden Future, Proc. SOHO 14/GONG 2004 Workshop, (ed. D. Danesy, ESA SP-559, Noordwijk, The Netherlands), 548.

62. Mao, D., Mussack, K. & Däppen, W. 2004, [Development of molecular-dynamics tools to study hot dense Coulomb systems], in Helio- and Asteroseismology: Towards a Golden Future, Proc. SOHO 14/GONG 2004 Workshop, (ed. D. Danesy, ESA SP-559, Noordwijk, The Netherlands), 560.

63. Lin, C.H. & Däppen, W. 2005, [An Inversion Procedure to Investigate the Equations of State and Chemical Composition of the Sun], Astrophys. J. 623, 556-570.

64. Däppen, W. 2006, [The Equation of State for the Solar Interior], J. Phys. A: Math. Gen. 39, 4441-4446.

65. Trampedach, R., Däppen, W. & Baturin, V.A. 2006, [A synoptic comparison of the MHD and the OPAL equations of state], Astrophys. J. 646, (to appear 20 July 2006).