@article{IVM_1980_5_a13,
     author = {T. V. Chekmarev},
     title = {Solution of {a~Darboux} problem by reducing it to {a~Goursat} problem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {67--72},
     publisher = {mathdoc},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1980_5_a13/}
}