%0 Journal Article %A Hermann König %T s-numbers, eigenvalues and the trace theorem in Banach spaces %J Studia Mathematica %D 1980 %P 157-172 %V 67 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-67-2-157-172/ %R 10.4064/sm-67-2-157-172 %G en %F 10_4064_sm_67_2_157_172