%0 Journal Article %A B. B. Komrakov %T Einstein--Maxwell equation on four-dimensional homogeneous spaces %J Lobachevskii journal of mathematics %D 2001 %P 33-165 %V 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2001_8_a2/ %G en %F LJM_2001_8_a2