@article{MZM_2014_95_6_a12,
     author = {S. E. Stepanov},
     title = {Betti and {Tachibana} {Numbers}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {926--936},
     publisher = {mathdoc},
     volume = {95},
     number = {6},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2014_95_6_a12/}
}