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POLYGON, 6 (2)., pp. 45-61.
DISCRETE MATHEMATICS, 153 (1-3)., pp. 177-188.
In: Proceeding of the seventh ACM-SIAM symposium on discrete algorithms. Atlanta, 1996..
COMBINATORICA, 16 (3)., pp. 399-406.
COMPUTERS AND ARTIFICIAL INTELLIGENCE, 15 (6)., pp. 571-577.
ARCHIVE DER MATHEMATIK, 64, pp. 459-464.
JOURNAL OF ALGORITHMS, 16 (1)., pp. 24-32.
APPLICABLE ALGEBRA IN ENGINEERING COMMUNICATION AND COMPUTING, 5 (2)., pp. 71-90.
KOZEPISKOLAI MATEMATIKAI ES FIZIKAI LAPOK, 44 (1)., pp. 1-7.
North-Holland, Amsterdam, pp. 465-474.