Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1973_7_4_a0, author = {V. M. Adamyan}, title = {Nondegenerate unitary couplings of semiunitary operators}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {1--16}, publisher = {mathdoc}, volume = {7}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a0/} }
V. M. Adamyan. Nondegenerate unitary couplings of semiunitary operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 7 (1973) no. 4, pp. 1-16. http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a0/