%0 Journal Article %A Chuji Tanaka %T On functions of class U %J Annales Fennici Mathematici %D 1963 %V 316-335 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1963.317/ %R 10.5186/aasfm.1963.317 %G en %F AFM_1963_316-335_a18