@article{DE_1986_22_6_a26,
     author = {T. V. Chekmarev},
     title = {The {Cauchy} and {Goursat} problems for a system of differential equations with two lines of parabolic degeneracy},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1080--1084},
     publisher = {mathdoc},
     volume = {22},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_6_a26/}
}