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Discrete Applied Mathematics > 2003 > 129 > 2-3 > 263-283
Discrete Applied Mathematics > 2002 > 122 > 1-3 > 251-261
Discrete Applied Mathematics > 2003 > 129 > 2-3 > 263-283
Discrete Applied Mathematics > 2002 > 122 > 1-3 > 251-261