%0 Journal Article %A Janyška, Josef %T Geometric structures on the tangent bundle of the Einstein spacetime %J Archivum mathematicum %D 2006 %P 195-203 %V 42 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2006__42_2_a10/ %G en %F ARM_2006__42_2_a10