@article{RM_1965_20_4_a20,
     author = {V. P. Maslov},
     title = {The behaviour in the large of solutions of equations of mathematical physics and {Morse} index},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1965_20_4_a20/}
}