@article{00147576, title = {An infinite version of the P\'olya enumeration theorem.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {15}, year = {1992}, pages = {697-700}, doi = {10.1155/S0161171292000917}, zbl = {0767.05006}, language = {en}, url = {http://dml.mathdoc.fr/item/00147576} }
Bekes, Robert A. An infinite version of the Pólya enumeration theorem.. International Journal of Mathematics and Mathematical Sciences, Tome 15 (1992) pp. 697-700. doi : 10.1155/S0161171292000917. http://gdmltest.u-ga.fr/item/00147576/