@article{DAN_1964_157_4_a3,
     author = {I. M. Dektyarev},
     title = {The closed-graph theorem for ultracomplete spaces},
     journal = {Doklady Akademii Nauk},
     pages = {771--773},
     year = {1964},
     volume = {157},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_4_a3/}
}