Ranieri Baraglia José Ignacio Hidalgo Raffaele Perego A Parallel Hybrid Heuristic for the TSP. 193-202 2001 conf/evoW/2001 EvoWorkshops http://dx.doi.org/10.1007/3-540-45365-2_20 db/conf/evoW/evoW2001.html#BaragliaHP01