%0 Journal Article
%A Kiyota, Yuki
%A Tsukada, Kazumi
%T Curvature tensors and Singer invariants of four-dimensional homogeneous spaces
%J Commentationes Mathematicae Universitatis Carolinae
%D 1999
%P 723-733
%V 40
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1999__40_4_a9/
%G en
%F CMUC_1999__40_4_a9