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@article{MZM_1967_1_5_a11, author = {E. A. Larionov}, title = {A commutative family of operators in a space with indefinite metric}, journal = {Matemati\v{c}eskie zametki}, pages = {589--594}, publisher = {mathdoc}, volume = {1}, number = {5}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1967_1_5_a11/} }
E. A. Larionov. A commutative family of operators in a space with indefinite metric. Matematičeskie zametki, Tome 1 (1967) no. 5, pp. 589-594. http://geodesic.mathdoc.fr/item/MZM_1967_1_5_a11/