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Linear Algebra and Its Applications > 2013 > 439 > 3 > 640-652
Mathematical and Computer Modelling > 2013 > 57 > 7-8 > 1891-1896
IEEE Intelligent Systems > 2012 > 27 > 5 > 44 - 50
Mathematical and Computer Modelling > 2010 > 52 > 7-8 > 1052-1057
IEEE Internet Computing > 2010 > 14 > 4 > 41 - 49
Frontiers of Computer Science > 2009 > 3 > 4 > 435-444