@article{1103051863, author = {Heller, I.}, title = {Contributions to the theory of divergent series.}, journal = {Pacific J. Math.}, volume = {2}, number = {4}, year = {1952}, pages = { 153-177}, language = {en}, url = {http://dml.mathdoc.fr/item/1103051863} }
Heller, I. Contributions to the theory of divergent series.. Pacific J. Math., Tome 2 (1952) no. 4, pp. 153-177. http://gdmltest.u-ga.fr/item/1103051863/