%0 Journal Article %A Frehland, Eckart %T Convergence and accuracy of approximation methods in general relativity. The time-independent case %J Annales de l'I.H.P. Physique théorique %D 1976 %P 367-391 %V 24 %N 4 %I Gauthier-Villars %U http://geodesic.mathdoc.fr/item/AIHPA_1976__24_4_367_0/ %G en %F AIHPA_1976__24_4_367_0