%0 Journal Article %A Pessa, Eliano %T The De Sitter Universe and general relativity. %J Collectanea mathematica %D 1973 %P 151-174 %V 24 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CLTM_1973_1973_1_a12/ %G en %F CLTM_1973_1973_1_a12