Cabello Piñar, Juan Carlos ; Casas Del Castillo, Ricardo ; Montiel López, Pablo Cabello Piñar, J. C.; Casas del Castillo, R.; Montiel, P. On Finite Rank Operators on Centrally Closed Semiprime Rings. Advances in Pure Mathematics, 4: 499–505 (2014). [http://hdl.handle.net/10481/41188].
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2014