@article{JIS_2014__17_8_a6,
     author = {Cloutier, Maurice-\'Etienne and De Koninck, Jean-Marie and Doyon, Nicolas},
     title = {On the powerful and squarefree parts of an integer},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {17},
     number = {8},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2014__17_8_a6/}
}