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IEEE Latin America Transactions > 2007 > 5 > 6 > 441 - 447
Physica A: Statistical Mechanics and its Applications > 2005 > 356 > 1 > 157-161
IEEE Latin America Transactions > 2007 > 5 > 6 > 441 - 447
Physica A: Statistical Mechanics and its Applications > 2005 > 356 > 1 > 157-161