@article{GDZPPN002063611, title = {The secondary characteristic classes of parabolic foliations.}, journal = {Commentarii mathematici Helvetici}, volume = {54}, year = {1979}, pages = {601-614}, zbl = {0435.57007}, url = {http://dml.mathdoc.fr/item/GDZPPN002063611} }
Pittie, Harsh V. The secondary characteristic classes of parabolic foliations.. Commentarii mathematici Helvetici, Tome 54 (1979) pp. 601-614. http://gdmltest.u-ga.fr/item/GDZPPN002063611/