A further look into combinatorial orthogonality. Severini, Simone; Szöllősi, Ferenc — 2008 ELA. The Electronic Journal of Linear Algebra [electronic only]
A matrix representation of graphs and its spectrum as a graph invariant. Emms, David; Hancock, Edwin R.; Severini, Simone; Wilson, Richard C. — 2006 The Electronic Journal of Combinatorics [electronic only]
Rational orthogonal versus real orthogonal. Đoković, Dragomir Ž.; Severini, Simone; Szöllősi, Ferenc — 2009 ELA. The Electronic Journal of Linear Algebra [electronic only]
Partial transposes of permutation matrices. Hou, Qing-Hu; Mansour, Toufik; Severini, Simone — 2008 Integers
On the quantum chromatic number of a graph. Cameron, Peter J.; Montanaro, Ashley; Newman, Michael W.; Severini, Simone; Winter, Andreas — 2007 The Electronic Journal of Combinatorics [electronic only]