@article{DAN_1968_178_1_a12,
     author = {G. I. Chandirov},
     title = {Investigation of a weak solution of a mixed problem for a hyperbolic equation with nonlinear part},
     journal = {Doklady Akademii Nauk},
     pages = {51--54},
     publisher = {mathdoc},
     volume = {178},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_1_a12/}
}