@article{DE_1977_13_10_a16,
     author = {I. V. Suveyka},
     title = {The method of a priori estimates in the {Cauchy} problem for {I.\,G.~Petrovski{\v\i}} well-posed systems of equations with variable coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1855--1866},
     publisher = {mathdoc},
     volume = {13},
     number = {10},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_10_a16/}
}