James Allen Fill, Svante Janson, Mark Daniel Ward. Partitions with Distinct Multiplicities of Parts: On An "Unsolved Problem" Posed By Herbert Wilf. Electr. J. Comb., 19(2):18, 2012. [doi]
@article{FillJW12, title = {Partitions with Distinct Multiplicities of Parts: On An "Unsolved Problem" Posed By Herbert Wilf}, author = {James Allen Fill and Svante Janson and Mark Daniel Ward}, year = {2012}, url = {http://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i2p18}, researchr = {https://researchr.org/publication/FillJW12}, cites = {0}, citedby = {0}, journal = {Electr. J. Comb.}, volume = {19}, number = {2}, pages = {18}, }