1
Published 2006
2
Published 2001
3
by Niven, Paul R.
Published 2006
4
by Niven, Paul R.
Published 2005
5
Published 2012
6
Published 2012
7
by Magill, Gerard
Published 2020
8
by Mundel, Marvin Everett
Published 1983
9
by Furuya, Tsutomu
Published 1988