00468nam a2200145Ia 4500020001500000082001900015100004300034245005200077260003400129300002800163490003900191500005600230500000500286700003100291  a1852332689  a511.5bB216.DT  aBang-Jensen, Jorgen and Gutin, Gregory  aDigraphs; theory, algorithms and applicationsb  aLondonbSpringer-Verlagc2001  axxii, 754p. Bibl. Index  aSpringer monographs in Mathematics  a"Purchased under NBHM grant for the year 2000-2001"  a  aGutin, Gregory ; jt. auth.