@article{1138843233,
author = {Umegaki, Hisaharu},
title = {Operator algebra of finite class},
journal = {Kodai Math. Sem. Rep.},
volume = {4},
number = {1},
year = {1952},
pages = { 123-129},
language = {en},
url = {http://dml.mathdoc.fr/item/1138843233}
}
Umegaki, Hisaharu. Operator algebra of finite class. Kodai Math. Sem. Rep., Tome 4 (1952) no. 1, pp. 123-129. http://gdmltest.u-ga.fr/item/1138843233/