1
by Ackoff, Russell L.
Published 1978
2
by Elliott, Barry
Published 2003
3
by Sze, S. M.
Published 2002
4
by Jaeger, Richard C.
Published 2002
5
by King, Alistair
Published 2003
6
by Kraus, John Daniel
Published 2003
7
by Roth,Charles H., Jr.
Published 2004
8
9
10
11
by Roth,Charles H., Jr.
Published 1995
12
13
14
by Ogata, Katsuhiko
Published 2002
15
by Schiller, Jochen H.
Published 2003
16
by Glover, Ian
Published 2004
17
18
19
20
by Brown, Stephen
Published 2005