@article{02220785, title = {Higher-order Nielsen numbers.}, journal = {Fixed Point Theory and Applications [electronic only]}, volume = {2005}, year = {2005}, pages = {47-66}, doi = {10.1155/FPTA.2005.47}, zbl = {1081.55004}, language = {en}, url = {http://dml.mathdoc.fr/item/02220785} }
Saveliev, Peter. Higher-order Nielsen numbers.. Fixed Point Theory and Applications [electronic only], Tome 2005 (2005) pp. 47-66. doi : 10.1155/FPTA.2005.47. http://gdmltest.u-ga.fr/item/02220785/