@article{GDZPPN002097907, title = {Independent Rigid Secondary Classes for Holomorphic Foliations.}, journal = {Inventiones mathematicae}, volume = {69}, year = {1982}, pages = {313-324}, zbl = {0489.57006}, url = {http://dml.mathdoc.fr/item/GDZPPN002097907} }
Hurder, Steven. Independent Rigid Secondary Classes for Holomorphic Foliations.. Inventiones mathematicae, Tome 69 (1982) pp. 313-324. http://gdmltest.u-ga.fr/item/GDZPPN002097907/