Joseph M. Pasia Karl F. Doerner Richard F. Hartl Marc Reimann A Population-Based Local Search for Solving a Bi-objective Vehicle Routing Problem. 166-175 2007 conf/evoW/2007cop EvoCOP http://dx.doi.org/10.1007/978-3-540-71615-0_15 db/conf/evoW/evocop2007.html#PasiaDHR07