@article{MZM_2015_97_6_a8,
     author = {M. N. Feller},
     title = {Boundary-Value {Problems} for a {Nonlinear} {Hyperbolic} {Equation} with {Variable} {Coefficients} and the {L\'evy} {Laplacian.~II}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {917--924},
     publisher = {mathdoc},
     volume = {97},
     number = {6},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2015_97_6_a8/}
}