@article{DAN_1984_274_2_a1,
     author = {V. Ya. Belov},
     title = {A formula of {Morse} in the critical case},
     journal = {Doklady Akademii Nauk},
     pages = {269--272},
     publisher = {mathdoc},
     volume = {274},
     number = {2},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_274_2_a1/}
}