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Discrete & Computational Geometry > 2019 > 61 > 3 > 562-594
Journal of Combinatorial Optimization > 2013 > 26 > 4 > 799-810
Applied Mathematics-A Journal of Chinese Universities > 2011 > 26 > 2 > 177-186
Journal of Combinatorial Optimization > 2009 > 17 > 4 > 347-366