@article{10_4064_cm_60_61_1_225_233,
     author = {J. C. Peral},
     title = {On a sum of {Vinogradov}},
     journal = {Colloquium Mathematicum},
     pages = {225--233},
     publisher = {mathdoc},
     volume = {60},
     number = {1},
     year = {1990},
     doi = {10.4064/cm-60-61-1-225-233},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-1-225-233/}
}