Berndt, Bruce C.Bruce C.BerndtDixit, AtulAtulDixitKim, SunSunKimZaharescu, AlexandruAlexandruZaharescu2026-02-042026-02-042016-10-01https://repository.iitgn.ac.in/handle/IITG2025/34446en-USOn a theorem of A. I. Popov on sums of squaresArticle