@article{IVM_1985_4_a13,
     author = {V. M. Kesel'man},
     title = {Riemannian manifolds of $\alpha$-parabolic type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {81--83},
     publisher = {mathdoc},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_4_a13/}
}