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@article{PORMA_1970__29_2_115113, author = {Spira, Robert}, title = {General {Lambert} series}, journal = {Portugaliae mathematica}, pages = {95--99}, publisher = {mathdoc}, volume = {29}, number = {2}, year = {1970}, mrnumber = {0284571}, zbl = {0218.30003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1970__29_2_115113/} }
Spira, Robert. General Lambert series. Portugaliae mathematica, Tome 29 (1970) no. 2, pp. 95-99. http://geodesic.mathdoc.fr/item/PORMA_1970__29_2_115113/