@article{DAN_1969_186_2_a7,
     author = {M. M. Choban},
     title = {The exponential topology},
     journal = {Doklady Akademii Nauk},
     pages = {272--274},
     year = {1969},
     volume = {186},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_2_a7/}
}