@article{DAN_1965_160_6_a13,
     author = {N. E. Tovmasyan},
     title = {Some boundary-value problems for systems of second-order equations of elliptic type on the plane},
     journal = {Doklady Akademii Nauk},
     pages = {1275--1278},
     publisher = {mathdoc},
     volume = {160},
     number = {6},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_6_a13/}
}