@article{GDZPPN002291355, title = {Operator Groups and Quasi-orthogonality.}, journal = {Mathematische Annalen}, volume = {152}, year = {1963}, pages = {271-275}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002291355} }
TAFT, E.J. Operator Groups and Quasi-orthogonality.. Mathematische Annalen, Tome 152 (1963) pp. 271-275. http://gdmltest.u-ga.fr/item/GDZPPN002291355/