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In The Elctronic Journal of combinatorics, 21,(2) (2014).
Joint with E. Bagno, Y. Cherniavsky.
In Discrete Mathematics, vol. 312, Issue 6, (2012).
Joint with E. Bagno & Y. Cherniavsky.
In Linear Algebra and its applications. 429 (1), 2008.
Joint with E. Bagno, D. Garber & T. Mansour.
In Seminar Lotharingien de Combinatoire 60 (2009).
Joint with E. Bagno & R. Biagioli.
In Israel Journal of Math, 160, (2007).
Joint with E. Bagno, A. Butman, & D. Garber.
In The Electronic Journal of Combinatorics, 14, (2007).