@article{DAN_1967_172_4_a5,
     author = {B. Efimov},
     title = {Extremally disconnected bicompacta},
     journal = {Doklady Akademii Nauk},
     pages = {771--774},
     year = {1967},
     volume = {172},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_172_4_a5/}
}