@article{05171560, title = {On the irrationality of a divisor function series.}, journal = {Integers}, volume = {7}, year = {2007}, zbl = {1123.11022}, language = {en}, url = {http://dml.mathdoc.fr/item/05171560} }
Friedlander, John B.; Luca, Florian; Stoiciu, Mihai. On the irrationality of a divisor function series.. Integers, Tome 7 (2007) . http://gdmltest.u-ga.fr/item/05171560/