@article{05792478, title = {Combinatorial aspects of the generalized Euler's totient.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2010}, year = {2010}, doi = {10.1155/2010/648165}, zbl = {1209.11009}, language = {en}, url = {http://dml.mathdoc.fr/item/05792478} }
Pabhapote, Nittiya; Laohakosol, Vichian. Combinatorial aspects of the generalized Euler's totient.. International Journal of Mathematics and Mathematical Sciences, Tome 2010 (2010) . doi : 10.1155/2010/648165. http://gdmltest.u-ga.fr/item/05792478/