1
by Hubbard, R. Glenn.
Published 2000
2
by Harford
Published 2006
3
Published 1957
4
5
by Shahril Marzuki
Published 2005
6
Published 2012
7
8
Published 2008
9
Published 2015
10
11
by Cooley, Philip L.
Published 1988
12
by Ridloff
Published 1985