@article{CHEB_2018_19_2_a13,
     author = {A. P. Naumenko},
     title = {On the approximation of real numbers by the sums of square of primes},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {172--182},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2018_19_2_a13/}
}