EUROPEAN JOURNAL OF COMBINATORICS, vol. 28, no. 7, page. 2026 - 2052, 2007-10
DISCRETE & COMPUTATIONAL GEOMETRY, vol. 38, no. 3, page. 605 - 614, 2007-10
JOURNAL OF ALGEBRAIC COMBINATORICS, vol. 25, no. 4, page. 459 - 471, 2007-06
LINEAR ALGEBRA AND ITS APPLICATIONS, vol. 423, no. 1, page. 33 - 41, 2007-05-01
EUROPEAN JOURNAL OF COMBINATORICS, vol. 28, no. 2, page. 501 - 516, 2007-02