@article{DAN_1971_199_6_a1,
     author = {A. V. Arkhangel'skii},
     title = {On bicompacta hereditarily satisfying {Suslin{\textquoteright}s} condition. {Tightness} and free sequences},
     journal = {Doklady Akademii Nauk},
     pages = {1227--1230},
     publisher = {mathdoc},
     volume = {199},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_6_a1/}
}