COMPUTERS & INDUSTRIAL ENGINEERING, vol. 27, no. 1-4, page. 167 - 171, 1994-09
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT, vol. 41, no. 3, page. 264 - 275, 1994-08
EXPERT SYSTEMS, vol. 11, no. 2, page. 109 - 119, 1994-05
INTERNATIONAL JOURNAL OF INFORMATION MANAGEMENT, vol. 14, page. 357 - 368, 1994-01