<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ramos, Tania Rodrigues Pereira</style></author><author><style face="normal" font="default" size="100%">Gomes-Salema, Maria Isabel</style></author><author><style face="normal" font="default" size="100%">Barbosa-povoa, Ana Paula</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A multi-product, multi-depot vehicle routing problem in a reverse logistics system: comparative study of an exact formulation and a heuristic algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Livro de actas da 14º congresso da APDIO, IO2009</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">heuristic</style></keyword><keyword><style  face="normal" font="default" size="100%">milp formulation</style></keyword><keyword><style  face="normal" font="default" size="100%">reverse logistics</style></keyword><keyword><style  face="normal" font="default" size="100%">vehicle routing problem</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><pages><style face="normal" font="default" size="100%">195–202</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>