'On May 27-29, 1975, a Symposium on Theoretical Principles in Astrophysics and Relativity was held at the University of Chicago in honor of S. Chandrasekhar ...' - Preface.
Theoretical principles in astrophysics and relativity. ISBN 0226469891. Published by University of Chicago Press in 1978. Publication and catalogue information, links to buy online and reader comments.