@article{1102912456, author = {Boone, James R.}, title = {On $k$-quotient mappings.}, journal = {Pacific J. Math.}, volume = {55}, number = {2}, year = {1974}, pages = { 369-377}, language = {en}, url = {http://dml.mathdoc.fr/item/1102912456} }
Boone, James R. On $k$-quotient mappings.. Pacific J. Math., Tome 55 (1974) no. 2, pp. 369-377. http://gdmltest.u-ga.fr/item/1102912456/