%0 Journal Article %A Matts Essén %T A generalization of the M. Riesz theorem on conjugate functions and the Zygmung LlogL -theorem to Rd, d ≥ 2 %J Annales Fennici Mathematici %D 1990 %P 83-105 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1990.1509/ %R 10.5186/aasfm.1990.1509 %G en %F AFM_1990_15_1_a7