@article{TM_1994_205_a10,
     author = {A. A. Oshemkov},
     title = {Morse functions on two-dimensional surfaces. {Encoding} of singularities},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {131--140},
     publisher = {mathdoc},
     volume = {205},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1994_205_a10/}
}