@article{MZM_1995_57_2_a12,
     author = {Yu. N. Baulina},
     title = {On~the number of solutions of the equation $x_1^2+\dots+x_n^2=nx_1\dots x_n$, not exceeding a~given limit},
     journal = {Matemati\v{c}eskie zametki},
     pages = {297--300},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_57_2_a12/}
}