@article{ZNSL_1990_181_a1,
     author = {L. V. Kapitanskii},
     title = {The {Cauchy} problem for a semilinear wave {equation.~III}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {24--64},
     publisher = {mathdoc},
     volume = {181},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_181_a1/}
}