@article{DAN_1970_191_5_a4,
     author = {M. A. Evgrafov},
     title = {A certain formula for the representation of the fundamental solution of a differential equation by a continual integral},
     journal = {Doklady Akademii Nauk},
     pages = {979--982},
     publisher = {mathdoc},
     volume = {191},
     number = {5},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_5_a4/}
}