@article{TVP_1968_13_4_a8,
     author = {B. A. Rogozin},
     title = {On the existence of exact upper sequences},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {701--707},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1968_13_4_a8/}
}