@article{1077492934, author = {Hall, D. W. and Kelley, J. L.}, title = {Periodic types of transformations}, journal = {Duke Math. J.}, volume = {8}, number = {1}, year = {1941}, pages = { 625-630}, language = {en}, url = {http://dml.mathdoc.fr/item/1077492934} }
Hall, D. W.; Kelley, J. L. Periodic types of transformations. Duke Math. J., Tome 8 (1941) no. 1, pp. 625-630. http://gdmltest.u-ga.fr/item/1077492934/