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Computers and Mathematics with Applications > 2011 > 62 > 4 > 1772-1779
Applied Mathematics Letters > 2010 > 23 > 12 > 1444-1450
Computers and Mathematics with Applications > 2005 > 49 > 11-12 > 1787-1795
Computers and Mathematics with Applications > 2011 > 62 > 4 > 1772-1779
Applied Mathematics Letters > 2010 > 23 > 12 > 1444-1450
Computers and Mathematics with Applications > 2005 > 49 > 11-12 > 1787-1795