An Ω + -estimate for the number of lattice points in a sphere
Rendiconti del Seminario Matematico della Università di Padova, Tome 73 (1985), pp. 31-40. 
@article{RSMUP_1985__73__31_0,
     author = {Nowak, Werner Georg},
     title = {An $\Omega _+$-estimate for the number of lattice points in a sphere},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {31--40},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {73},
     year = {1985},
     zbl = {0519.10042},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1985__73__31_0/}
}
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Nowak, Werner Georg. An $\Omega _+$-estimate for the number of lattice points in a sphere. Rendiconti del Seminario Matematico della Università di Padova, Tome 73 (1985), pp. 31-40. http://archive.numdam.org/item/RSMUP_1985__73__31_0/

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