@article{GDZPPN002388510, title = {Infinite Series of E-Functions.}, journal = {Mathematische Zeitschrift}, volume = {71}, year = {1959}, pages = {143-145}, zbl = {0085.29101}, url = {http://dml.mathdoc.fr/item/GDZPPN002388510} }
MacRobert, T.M. Infinite Series of E-Functions.. Mathematische Zeitschrift, Tome 71 (1959) pp. 143-145. http://gdmltest.u-ga.fr/item/GDZPPN002388510/