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Linear Algebra and Its Applications > 2010 > 433 > 7 > 1472-1480
Computers and Mathematics with Applications > 2009 > 58 > 3 > 449-463
Journal of Mathematics and Applications > 2009 > Vol. 31 > 37-49
Computers and Mathematics with Applications > 2008 > 55 > 3 > 494-509