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Archives of Mining Sciences > 2009 > Vol. 54, no 3 > 441-454
Mathematics and Computers in Simulation > 2006 > 71 > 3 > 206-211
Archives of Mining Sciences > 2009 > Vol. 54, no 3 > 441-454
Mathematics and Computers in Simulation > 2006 > 71 > 3 > 206-211