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Physica A: Statistical Mechanics and its Applications > 2007 > 379 > 2 > 483-490
Physica A: Statistical Mechanics and its Applications > 2003 > 327 > 1-2 > 124-128
Computer Physics Communications > 2002 > 147 > 1-2 > 641-645
Pattern Recognition > 1995 > 28 > 8 > 1267-1276