@article{MZM_2003_73_4_a4,
     author = {A. I. Gerko},
     title = {Disjointness of {Some} {Types} of {Extensions} of {Topological} {Transformation} {Semigroups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {527--544},
     year = {2003},
     volume = {73},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2003_73_4_a4/}
}