@article{MZM_2008_83_5_a16,
     author = {V. V. Ryzhikov},
     title = {Self-Joinings of {Commutative} {Actions} with {Invariant} {Measure}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {792--795},
     publisher = {mathdoc},
     volume = {83},
     number = {5},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_83_5_a16/}
}