@article{VMUMM_2012_4_a2,
     author = {E. A. Kudryavtseva},
     title = {Special framed {Morse} functions on surfaces},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {14--20},
     publisher = {mathdoc},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2012_4_a2/}
}