@article{MZ_1960__73_169844,
     author = {T.M. MacRobert},
     title = {Recurrence {Formulae} for the {E-functions.}},
     journal = {Mathematische Zeitschrift},
     pages = {254--255},
     publisher = {mathdoc},
     volume = {73},
     year = {1960},
     zbl = {0091.06303},
     url = {http://geodesic.mathdoc.fr/item/MZ_1960__73_169844/}
}