CRAMA, Y. - LOEBL, M. - POLJAK, S. A Decomposition of Strongly Unimodular Matrices into Incidence Matrices of Digraphs. 1. ed. Bonn : Inst. für Ökon. und Operations Research, 1989. 6 s. Report, No.89611-OR. [Copy count : 1, currently available 1, at library only 0]