@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://www.numdam.org/item/RSMUP_1985__73__31_0/}
}