@article{DAN_1964_154_4_a26,
     author = {B. V. Ioffe and K. N. Zelenin},
     title = {Hoffman's splitting of the pyrazoline ring},
     journal = {Doklady Akademii Nauk},
     pages = {864--867},
     publisher = {mathdoc},
     volume = {154},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_4_a26/}
}