@article{MZM_1975_18_5_a5,
     author = {V. N. Popov},
     title = {The number of integer points under a~parabola},
     journal = {Matemati\v{c}eskie zametki},
     pages = {699--704},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_5_a5/}
}