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Physica A: Statistical Mechanics and its Applications > 2000 > 283 > 1-2 > 136-139
Physics Letters A > 1997 > 232 > 5 > 356-361
Physica A: Statistical Mechanics and its Applications > 2000 > 283 > 1-2 > 136-139
Physics Letters A > 1997 > 232 > 5 > 356-361