@article{IVM_1977_6_a0,
     author = {M. D. Bronshtein and L. G. Zaletova and V. R. Fridlender},
     title = {The {Goursat} problem for nonlinear systems over {Gevrey} {spaces.~I}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--15},
     publisher = {mathdoc},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1977_6_a0/}
}