TY - JOUR AU - Monnot, Jérôme TI - Differential approximation of NP-hard problems with equal size feasible solutions JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2002 SP - 279 EP - 297 VL - 36 IS - 4 PB - EDP-Sciences UR - http://archive.numdam.org/articles/10.1051/ro:2003008/ DO - 10.1051/ro:2003008 LA - en ID - RO_2002__36_4_279_0 ER -