TY - BOOK AU - Bang-Jensen Jorgen AU - Gutin Gregory TI - Digraphs: theory, algorithms and applications T2 - Springer monographs in mathematics SN - 1852332689 (hbd) U1 - B44, P1 PY - 2001/// CY - London PB - Springer-Verlag KW - Graph Theory KW - Mathematics N1 - Bibliographical references 683-715p ER -