@article{RM_1991_46_5_a12,
     author = {V. V. Ryzhikov},
     title = {Joinings of dynamical systems. {Approximations} and mixing},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {199--200},
     publisher = {mathdoc},
     volume = {46},
     number = {5},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1991_46_5_a12/}
}