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Journal of Mathematical Analysis and Applications > 2000 > 243 > 2 > 458-463
Linear Algebra and Its Applications > 1999 > 289 > 1-3 > 267-277
Journal of Mathematical Analysis and Applications > 2000 > 243 > 2 > 458-463
Linear Algebra and Its Applications > 1999 > 289 > 1-3 > 267-277