By George R. Stewart ,
By Barbara Hambly ,
By Stephen R. Donaldson ,
By C.J. Cherryh ,
By Isaac Asimov ,
By John Steakley ,
By Robert L. Forward ,
By Doris Lessing ,
By Christopher Manson ,
By A.A. Attanasio ,
By Poul Anderson ,
By Robert A. Heinlein ,
By Larry Niven , Steven Barnes ,
By Vonda N. McIntyre ,
By Sri Aurobindo ,
By James P. Hogan ,
By Larry Niven , Jerry Pournelle ,
By John Michell ,
By David Graham ,
By Andre Norton ,
By William Goldman ,
By James Tiptree ,
By David Brin ,
By Nora Roberts ,
By Ian McDonald ,
By A.C. Crispin ,
By Timothy Zahn ,
By Ted Key ,
By Kevin Henkes ,
or
