@article{10_4064_cm136_1_4,
     author = {Feng-Juan Chen and Yong-Gao Chen},
     title = {On the index of an odd perfect number},
     journal = {Colloquium Mathematicum},
     pages = {41--49},
     publisher = {mathdoc},
     volume = {136},
     number = {1},
     year = {2014},
     doi = {10.4064/cm136-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm136-1-4/}
}