@article{GDZPPN002358719, title = {The approximation property for a pair of Banach spaces.}, journal = {Mathematica Scandinavica}, volume = {56}, year = {1985}, pages = {375-385}, zbl = {0608.46010}, url = {http://dml.mathdoc.fr/item/GDZPPN002358719} }
Bonder, Elmer. The approximation property for a pair of Banach spaces.. Mathematica Scandinavica, Tome 56 (1985) pp. 375-385. http://gdmltest.u-ga.fr/item/GDZPPN002358719/