@article{IVM_2013_3_a7,
     author = {V. I. Zhegalov and I. M. Sarvarova},
     title = {On conditions of solvability of the {Goursat} problem in quadratures},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {68--73},
     publisher = {mathdoc},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2013_3_a7/}
}