@article{GDZPPN002064960, title = {Class numbers and periodic smooth maps.}, journal = {Commentarii mathematici Helvetici}, volume = {58}, year = {1983}, pages = {167-185}, zbl = {0528.57032}, url = {http://dml.mathdoc.fr/item/GDZPPN002064960} }
Cappell, Sylvain E.; Shaneson, Julius L. Class numbers and periodic smooth maps.. Commentarii mathematici Helvetici, Tome 58 (1983) pp. 167-185. http://gdmltest.u-ga.fr/item/GDZPPN002064960/