@article{10_4153_CJM_1975_059_4, author = {Dash, A. T.}, title = {On a {Brown-Halmos-Pearcy} {Lemma}}, journal = {Canadian journal of mathematics}, pages = {495--495}, year = {1975}, volume = {27}, number = {3}, doi = {10.4153/CJM-1975-059-4}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-059-4/} }