@article{MZM_2002_72_4_a13,
     author = {I. D. Shkredov},
     title = {Recurrence in {Mean}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {625--632},
     publisher = {mathdoc},
     volume = {72},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2002_72_4_a13/}
}