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@article{DE_1979_15_2_a25, author = {E. G. Sitnikova}, title = {A lemma on the growth for elliptic systems}, journal = {Differencialʹnye uravneni\^a}, pages = {367--369}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_2_a25/} }
E. G. Sitnikova. A lemma on the growth for elliptic systems. Differencialʹnye uravneniâ, Tome 15 (1979) no. 2, pp. 367-369. http://geodesic.mathdoc.fr/item/DE_1979_15_2_a25/