@article{DAN_1963_150_6_a10,
     author = {Yu. L. Rodin},
     title = {On the algebraic theory of elliptic systems of first-order equations},
     journal = {Doklady Akademii Nauk},
     pages = {1228--1231},
     publisher = {mathdoc},
     volume = {150},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_6_a10/}
}