%0 Journal Article %A Fels, M. E. %A Renner, A. G. %T Non-reductive Homogeneous Pseudo-Riemannian Manifolds of Dimension Four %J Canadian journal of mathematics %D 2006 %P 282-311 %V 58 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2006-012-1/ %R 10.4153/CJM-2006-012-1 %F 10_4153_CJM_2006_012_1