@article{FPM_2009_15_6_a13,
     author = {S. E. Stepanov},
     title = {Curvature and {Tachibana} numbers},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {211--222},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2009_15_6_a13/}
}