21
by Brown
Published 2005
22
23
Published 2006
24
Published 2006
25
26
by Chapra
Published 2010
27
by Chapra
Published 2006
28
by Dukkipati
Published 2009
29
by Bali
Published 2007
30
by Blanchet
Published 2006
31
by Botello
Published 2005
32
by Botello
Published 2008
33
by Arora
Published 2007
34
by Tripathy
Published 2008
35
by Liengme
Published 2009
36
by REVELLE
Published 1997
37
by Brown
38
by RORABAUGH
Published 1997
39
by HAWKES
Published 1988
40
by CHORAFAS
Published 1992