On similarity of second order matrices over the ring of integers. (English)
Russ. Math. 50, No. 4, 56-63 (2006); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2006, No. 4, 57-64 (2006).
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Laplacian unimodular equivalence of graphs. (English)
Brualdi, Richard A. (ed.) et al., Combinatorial and graph-theoretical problems in linear algebra. Proceedings of a workshop that was an integral part of the 1991-92 IMA program on “Applied Linear Algebra" held at the University of Minnesota, USA, November 11-15, 1991. New York: Springer-Verlag. IMA Vol. Math. Appl. 50, 175-180 (1993).
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