@article{ZNSL_1987_160_a5,
     author = {E. P. Golubeva and O. M. Fomenko},
     title = {Asymptotic distribution of integral points on the three-dimensional sphere},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {54--71},
     publisher = {mathdoc},
     volume = {160},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_160_a5/}
}