%0 Journal Article %A Boris Rosenfeld %T Holomorphy Angles and Sectional Curvature in Hermitian Elliptic Planes Over Fields and Tensor Products of Fields %J Publications de l'Institut Mathématique %D 2005 %P 135 %V _N_S_78 %N 92 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.2298/PIM0578135R/ %R 10.2298/PIM0578135R %G en %F 10_2298_PIM0578135R