@article{IVM_1985_2_a10,
     author = {G. G. Ivanov},
     title = {Isometric motions in space-time with nonlinear scalar fields},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {77--78},
     publisher = {mathdoc},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_2_a10/}
}