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Linear Algebra and Its Applications > 2009 > 430 > 8-9 > 2102-2122
Journal of Differential Equations > 2003 > 194 > 2 > 328-363
Linear Algebra and Its Applications > 2009 > 430 > 8-9 > 2102-2122
Journal of Differential Equations > 2003 > 194 > 2 > 328-363