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Computers & Mathematics with Applications > 2016 > 71 > 11 > 2497-2512
Advances in Mathematics > 2008 > 219 > 6 > 1916-1936
Advances in Mathematics > 2005 > 194 > 1 > 203-223
Computers & Mathematics with Applications > 2016 > 71 > 11 > 2497-2512
Advances in Mathematics > 2008 > 219 > 6 > 1916-1936
Advances in Mathematics > 2005 > 194 > 1 > 203-223