@article{10_4153_CJM_1971_095_9,
     author = {Tam, P. K.},
     title = {On the {Unitary} {Equivalence} of {Certain} {Classes} of {Non-Normal} {Operators.} {I}},
     journal = {Canadian journal of mathematics},
     pages = {849--856},
     year = {1971},
     volume = {23},
     number = {5},
     doi = {10.4153/CJM-1971-095-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-095-9/}
}