%0 Journal Article %A Tomohiro Yamada %T Odd perfect numbers of a special form %J Colloquium Mathematicum %D 2005 %P 303-307 %V 103 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm103-2-13/ %R 10.4064/cm103-2-13 %G en %F 10_4064_cm103_2_13