@article{MZM_1986_39_3_a12,
     author = {I. B. Kalugin},
     title = {Characterization of random mappings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {424--430},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_39_3_a12/}
}