%0 Journal Article %A Alan Rose %T On the use of a complex (Quaternion) velocity potential in three dimensions. %J Commentarii mathematici Helvetici %D 1950 %P 135-148 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1950__24_139002/ %F CMH_1950__24_139002