@article{MZM_1997_61_4_a7,
     author = {S. V. Konyagin},
     title = {Recurrence of the integral of an odd conditionally periodic function},
     journal = {Matemati\v{c}eskie zametki},
     pages = {570--577},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_4_a7/}
}