@article{ZNSL_1999_256_a8,
     author = {A. G. Kachurovskii},
     title = {Convergence of averages in the ergodic theorem for groups~$\mathbb Z^d$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {121--128},
     publisher = {mathdoc},
     volume = {256},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_256_a8/}
}