1
Published 2009
2
by Goodrich
Published 2011
3
by STANDISH
Published 1994
4
by Karumanchi
Published 2012
5
by Shaffer
Published 2001
6
by Green
Published 2012
7
by Weiss
Published 2014
8
by DROZDEK
Published 2013
9
by Goodrich
Published 2011
10
by Shaffer
Published 2011
11
by Weiss
Published 2006
12
by HEILEMAN
Published 1996
13
by DROZDEK
Published 2005
14
by HAREL
Published 2004
15
by DROZDEK
Published 2001
16
by Sedgewick
Published 2002
17
by LEVITIN
Published 2003
18
by PREISS
Published 2000
19
by WATT
Published 2001
20
by Goodrich
Published 2004