1
2
3
by Easterby-Smith
Published 2008
4
5
6
by Firebaugh
Published 2008
7
by Braben
Published 2008
8
9
10
11
12
13
by Stanfielda
Published 1993
14
15
Published 2016
16
Published 2015
17
Published 2015
18
Published 1982
19
Published 1991
20
by Bernstein, 1944-
Published 1992