Metaheuristics for the bi-objective orienteering problem Michael SchildeKarl F. DoernerGuenter Kiechle OriginalPaper 15 May 2009 Pages: 179 - 201
Distributed scalable multi-robot learning using particle swarm optimization Jim PughAlcherio Martinoli OriginalPaper 27 May 2009 Pages: 203 - 222
Estimation-based ant colony optimization and local search for the probabilistic traveling salesman problem Prasanna BalaprakashMauro BirattariMarco Dorigo OriginalPaper 04 June 2009 Pages: 223 - 242