@article{GDZPPN002406845, title = {Collectively Compact Sets of Linear Operators.}, journal = {Mathematische Zeitschrift}, volume = {114}, year = {1970}, pages = {366-370}, zbl = {0188.19602}, url = {http://dml.mathdoc.fr/item/GDZPPN002406845} }
DePree, John D.; Higgins, John A. Collectively Compact Sets of Linear Operators.. Mathematische Zeitschrift, Tome 114 (1970) pp. 366-370. http://gdmltest.u-ga.fr/item/GDZPPN002406845/