%0 Journal Article %A Borchers, H. J. %T The generalized three circle - and other convexity theorems with application to the construction of envelopes of holomorphy %J Annales de l'institut Henri Poincaré. Section A, Physique Théorique %D 1977 %P 31-60 %V 27 %N 1 %I Gauthier-Villars %U http://archive.numdam.org/item/AIHPA_1977__27_1_31_0/ %G en %F AIHPA_1977__27_1_31_0