@article{VMUMM_1999_2_a3,
     author = {N. V. Korovina},
     title = {Maximally symmetric bifurcations of {Morse} functions on two-dimensional surfaces},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {13--19},
     publisher = {mathdoc},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1999_2_a3/}
}