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Applicable Analysis and Discrete Mathematics, 1 (2)., pp. 415-419.
Discussiones Mathematicae Graph Theory, 26 (3)., pp. 369-376.
DISCUSSIONES MATHEMATICAE GRAPH THEORY, 25, pp. 85-94.
DISCUSSIONES MATHEMATICAE GRAPH THEORY, 25, pp. 121-128.
SIAM JOURNAL ON DISCRETE MATHEMATICS, 17, pp. 361-376.
DISCUSSIONES MATHEMATICAE GRAPH THEORY, 24, pp. 503-507.
AUSTRALASIAN JOURNAL OF COMBINATORICS, 27, pp. 33-45.
EUROPEAN JOURNAL OF COMBINATORICS, 23, pp. 253-256.
DISCRETE MATHEMATICS, 259 (1-3)., pp. 257-262.
ARS COMBINATORIA, 63, pp. 235-256.