@article{IVM_1970_1_a13,
     author = {T. V. Chekmarev},
     title = {The {Cauchy,} {Goursat} and {Cauchy{\textendash}Goursat} problems for degenerate systems of {equations.~II}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {98--107},
     year = {1970},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_1_a13/}
}