@article{GDZPPN002479915, title = {The Expected Number of Parts in a Partition of n.}, journal = {Monatshefte f\"ur Mathematik}, volume = {82}, year = {1976}, pages = {203-212}, zbl = {0331.10026}, url = {http://dml.mathdoc.fr/item/GDZPPN002479915} }
Kessler, I.; Livingston, M. The Expected Number of Parts in a Partition of n.. Monatshefte für Mathematik, Tome 82 (1976) pp. 203-212. http://gdmltest.u-ga.fr/item/GDZPPN002479915/