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Physica A: Statistical Mechanics and its Applications > 1997 > 247 > 1-4 > 121-139
Physics Letters A > 1995 > 205 > 5-6 > 401-406
Physica A: Statistical Mechanics and its Applications > 1997 > 247 > 1-4 > 121-139
Physics Letters A > 1995 > 205 > 5-6 > 401-406