@article{MZM_1990_47_6_a18,
     author = {A. G. Gadzhiev},
     title = {The random walk of particles along a~ring},
     journal = {Matemati\v{c}eskie zametki},
     pages = {140--143},
     publisher = {mathdoc},
     volume = {47},
     number = {6},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_6_a18/}
}