%0 Journal Article %A Shigeru Haruki %T Note on the equation (...-...)f = 0. %J Aequationes mathematicae %D 1980 %P 49-52 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1980__21_182416/ %F AM2_1980__21_182416