@article{VMUMM_2019_5_a9,
     author = {A. P. Naumenko},
     title = {Approaching real numbers by sums of squares of two primes},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {51--55},
     year = {2019},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2019_5_a9/}
}