DISCRETE MATHEMATICS, vol. 303, no. 1-3, page. 65 - 79, 2005-11-06
INVENTIONES MATHEMATICAE, vol. 162, no. 1, page. 189 - 193, 2005-10
JOURNAL OF COMBINATORIAL THEORY SERIES B, vol. 94, no. 2, page. 245 - 258, 2005-07
Discrete Applied Mathematics, vol. 146, no. 1, page. 51 - 73, 2005-02-15
DESIGNS CODES AND CRYPTOGRAPHY, vol. 34, no. 2-3, page. 173 - 186, 2005-02