Book review. - Manfred Grauer; Colhourn; Ludger Rüschendorf; M. L. Dowling; Adi Ben-Israel; D. Schweigert; Peter Brucker (Z. Oper. Research, 1987)

Book reviews. - H. Becker; M. L. Dowling; E. M. Palmer (ZOR Methods Model. Oper. Res., 1989)