Journal of Combinatorial Optimization
Journal of Combinatorial Optimization > 2007 > 14 > 4 > 385-410
Journal of Combinatorial Optimization > 2007 > 14 > 4 > 475-480
Journal of Combinatorial Optimization > 2007 > 14 > 4 > 455-463
Journal of Combinatorial Optimization > 2007 > 14 > 4 > 411-425