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Blaauw, A. (ed.): 1955,
\newblock {\em Co-ordination of Galactic Research}, IAU Symposium No. 1,
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\bibitem[\protect\astroncite{Brun et~al.}{1986}]{hplot}
Brun, R., Renshall, H.~R., and Watkins, H.: 1986,
\newblock {\em HPLOT User's Guide},
\newblock Cern Computer Centre, Geneva

\bibitem[\protect\astroncite{Burkhardt et~al.}{1990}]{burkhardt}
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\newblock {\em Astronomy and Astrophysics Abstracts}, Vol. 49A,
\newblock Springer-Verlag, Heidelberg

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Chandrasekhar, S.: 1967,
\newblock in T. Gold (ed.), {\em The Nature of Time}, pp 68--74, Cornell
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\bibitem[\protect\astroncite{Einstein}{1911}]{einstein}
Einstein, A.: 1911,
\newblock {\em Wied. Ann.} {\bf 35}, 898

\bibitem[\protect\astroncite{Fokker}{1972}]{fokker}
Fokker, A.~D.: 1972,
\newblock {\em Zonsactiviteit},
\newblock Sterrekundig Instituut, Utrecht

\bibitem[\protect\astroncite{Hogeveen}{1990}]{hogeveen}
Hogeveen, S.~J.: 1990,
\newblock {\em Concept of a LaTeX style package for the Astronomy and
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\newblock Technical report, Astronomical Institute `Anton Pannekoek', Amsterdam

\bibitem[\protect\astroncite{Kuiper}{1935a}]{kuip:ds1}
Kuiper, G.~P.: 1935a,
\newblock {\em Publ. Astron. Soc. Pac.} {\bf 47}, 15

\bibitem[\protect\astroncite{Kuiper}{1935b}]{kuip:ds2}
Kuiper, G.~P.: 1935b,
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\bibitem[\protect\astroncite{Menzel}{1970}]{menzel}
Menzel, D.~H.: 1970,
\newblock in H.~G. Groth and P. Wellmann (eds.), {\em Spectrum Formation in
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\bibitem[\protect\astroncite{Ott}{1989}]{ott}
Ott, E.: 1989,
\newblock {\em Master's thesis}, University of Amsterdam, Amsterdam

\bibitem[\protect\astroncite{Pannekoek}{1902}]{pannekoek}
Pannekoek, A.: 1902,
\newblock {\em Ph.D. thesis}, University of Leiden, Leiden, The Netherlands

\bibitem[\protect\astroncite{Pringle and Wade}{1985}]{pringle:ibs}
Pringle, J.~E. and Wade, R.~A. (eds.): 1985,
\newblock {\em Interacting Binary Stars}, Chapt.~2, pp 21--38,
\newblock Cambridge University Press, Cambridge

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