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Computers and Mathematics with Applications > 2013 > 65 > 6 > 936-944
Computers and Mathematics with Applications > 2013 > 65 > 2 > 252-261
Computers and Mathematics with Applications > 2013 > 65 > 6 > 936-944
Computers and Mathematics with Applications > 2013 > 65 > 2 > 252-261