@article{10_4064_aa_5_2_171_177,
     author = {Paul Erd\"os},
     title = {Remarks on number theory {II.} {Some} problems on the \ensuremath{\sigma} function},
     journal = {Acta Arithmetica},
     pages = {171--177},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1959},
     doi = {10.4064/aa-5-2-171-177},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-5-2-171-177/}
}