@article{DAN_1965_161_6_a2,
     author = {B. A. Vostretsov},
     title = {The structure of the analytic solutions of a class of systems of linear partial differential equations with constant coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1259--1262},
     publisher = {mathdoc},
     volume = {161},
     number = {6},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_6_a2/}
}