@article{AL_2016_55_1_a0,
     author = {Yu. L. Ershov},
     title = {Essential extensions of $T_0${-spaces.~II}},
     journal = {Algebra i logika},
     pages = {3--13},
     publisher = {mathdoc},
     volume = {55},
     number = {1},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2016_55_1_a0/}
}