@article{MMO_1989_52_a2,
     author = {A. I. Vol'pert and V. A. Vol'pert},
     title = {Application of the theory of the rotation of vector fields to the investigation of wave solutions of parabolic equations},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {58--109},
     publisher = {mathdoc},
     volume = {52},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1989_52_a2/}
}