@article{CHEB_2019_20_4_a2,
     author = {I. Allakov and A. Sh. Safarov},
     title = {About one additive problem {Hua} {Loo} {Keng's}},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {32--45},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2019_20_4_a2/}
}