@article{MZM_1987_42_2_a12,
     author = {V. V. Popov},
     title = {Lindel\"of number of the space of closed groups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {279--287},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_2_a12/}
}