@article{GDZPPN002303736, title = {Cobordism of Homology Classes.}, journal = {Mathematische Annalen}, volume = {189}, year = {1970}, pages = {99-120}, zbl = {0187.45202}, url = {http://dml.mathdoc.fr/item/GDZPPN002303736} }
STONG, R.E. Cobordism of Homology Classes.. Mathematische Annalen, Tome 189 (1970) pp. 99-120. http://gdmltest.u-ga.fr/item/GDZPPN002303736/