@article{2866, author = {Tita, N.}, title = {$E\_{\phi ,\varphi }$ operators between normed spaces}, journal = {Portugaliae mathematica}, volume = {37}, year = {1978}, pages = {255-258}, zbl = {0466.47014}, mrnumber = {0633032}, language = {en}, url = {http://dml.mathdoc.fr/item/2866} }
Tita, N. $E_{\phi ,\varphi }$ operators between normed spaces. Portugaliae mathematica, Tome 37 (1978) pp. 255-258. http://gdmltest.u-ga.fr/item/2866/