Knauer, Ulrich 1942- Algebraic graph theory : morphisms, monoids, and matrices by Ulrich Knauer. - Berlin ; Boston : Walter De Gruyter, 2011. - xvi, 308p. - De Gruyter studies in mathematics ; 41 . ISBN: 9783110254082 Subjects--Topical Terms: Graph theory.Algebraic topology. Dewey Class. No.: 519.178 KNA