%0 Journal Article %A Evgenii Pustylnik %T Estimation of the position of intermediate spaces for a Banach couple %J Studia Mathematica %D 1993 %P 137-155 %V 107 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-107-2-137-155/ %R 10.4064/sm-107-2-137-155 %G en %F 10_4064_sm_107_2_137_155