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@article{DAN_1963_150_1_a11, author = {M. Z. Solomyak}, title = {On linear elliptic systems of first order}, journal = {Doklady Akademii Nauk}, pages = {48--51}, publisher = {mathdoc}, volume = {150}, number = {1}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_1_a11/} }
M. Z. Solomyak. On linear elliptic systems of first order. Doklady Akademii Nauk, Tome 150 (1963) no. 1, pp. 48-51. http://geodesic.mathdoc.fr/item/DAN_1963_150_1_a11/