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@article{AM2_1991__42_3_137431, author = {Dragomir Z. Dokovic}, title = {Unitary similarity of projectors.}, journal = {Aequationes mathematicae}, pages = {220--224}, publisher = {mathdoc}, volume = {42}, number = {3}, year = {1991}, zbl = {0749.15005}, url = {http://geodesic.mathdoc.fr/item/AM2_1991__42_3_137431/} }
Dragomir Z. Dokovic. Unitary similarity of projectors.. Aequationes mathematicae, Tome 42 (1991) no. 3, pp. 220-224. http://geodesic.mathdoc.fr/item/AM2_1991__42_3_137431/