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Physica A: Statistical Mechanics and its Applications > 2006 > 361 > 2 > 405-415
Applied Mathematics Letters > 2003 > 16 > 8 > 1217-1222
Physica A: Statistical Mechanics and its Applications > 2006 > 361 > 2 > 405-415
Applied Mathematics Letters > 2003 > 16 > 8 > 1217-1222