@article{10_4064_cm_62_2_193_196,
     author = {Maohua Le},
     title = {A note on primes p with $\ensuremath{\sigma}(p^m)=z^n$},
     journal = {Colloquium Mathematicum},
     pages = {193--196},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {1991},
     doi = {10.4064/cm-62-2-193-196},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-62-2-193-196/}
}