174 Author Index Volume 83 Índex. Article Elsevier vol. 83 n. 3 (1998) p. 465-466 83:3&amp;lt;465 Mathematical Programming 0025-5610 00255610v83n3p465 465 466 11 3 83 00255610v83n3 1998 ARTPUB info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://ddd.uab.cat/uab/matpro/00255610v83n3p465.pdf 2 59527