海量图书期刊资源，随时随地畅享阅读乐趣
Triangle-free strongly circular-perfect graphsSylvain Coulonges; Arnaud Pêcher; Annegret K. Wagler · 2009
Characterizing and bounding the imperfection ratio for some classes of graphsSylvain Coulonges; Arnaud Pêcher; Annegret K. Wagler · 2009