@article{MZM_2016_100_6_a6,
     author = {A. Yu. Kushnir and V. V. Ryzhikov},
     title = {Weak {Closures} of {Ergodic} {Actions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {847--854},
     publisher = {mathdoc},
     volume = {100},
     number = {6},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_100_6_a6/}
}