les and Time Warps. Norton, W. W. & Company, Inc. ISBN 0-393-31276-3..Wheeler, J. Craig (2007). Cosmic Catastrophes (2nd ed.). Cambridge University Press. ISBN 0-521-85714-7. {{cite book}}: Invalid |ref=harv (help)University textbooks and monographsCarroll, Sean M. (2004). Spacetime and Geometry. Addison Wesley. ISBN 0-8053-8732-3. {{cite book}}: Invalid |ref=harv (help), the lecture notes on which the book was based are available for free from Sean Carroll's website සංරක්ෂණය කළ පිටපත 2007-06-13 at the Wayback Machine.Carter, B. (1973). "Black hole equilibrium states". In DeWitt, B.S.; DeWitt, C. (eds.). Black Holes..Chandrasekhar, Subrahmanyan (1999). Mathematical Theory of Black Holes. Oxford University Press. ISBN 0-19-850370-9..Frolov, V.P.; Novikov, I.D. (1998). "Black hole physics". {{cite journal}}: Cite journal requires |journal= (help); Invalid |ref=harv (help).Hawking, S.W.; Ellis, G.F.R. (1973). Large Scale Structure of space time. Cambridge University Press. ISBN 052