@article{DAN_1963_150_3_a7,
     author = {M. I. Matiichuk},
     title = {Fundamental matrices of solutions of parabolic and elliptic systems whose coefficients satisfy},
     journal = {Doklady Akademii Nauk},
     pages = {480--483},
     year = {1963},
     volume = {150},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_3_a7/}
}