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@article{DAN_1970_190_4_a0, author = {A. B. Antonevich}, title = {The index of a pseudodifferential operator with a finite group of shifts}, journal = {Doklady Akademii Nauk}, pages = {751--752}, publisher = {mathdoc}, volume = {190}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_190_4_a0/} }
A. B. Antonevich. The index of a pseudodifferential operator with a finite group of shifts. Doklady Akademii Nauk, Tome 190 (1970) no. 4, pp. 751-752. http://geodesic.mathdoc.fr/item/DAN_1970_190_4_a0/