Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1976_19_4_a13, author = {V. B. Korotkov}, title = {The unitary equivalence of linear operatops to integral operators}, journal = {Matemati\v{c}eskie zametki}, pages = {601--610}, publisher = {mathdoc}, volume = {19}, number = {4}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_4_a13/} }
V. B. Korotkov. The unitary equivalence of linear operatops to integral operators. Matematičeskie zametki, Tome 19 (1976) no. 4, pp. 601-610. http://geodesic.mathdoc.fr/item/MZM_1976_19_4_a13/