@article{02139860, title = {Poincar\'e submersions.}, journal = {Geometry \& Topology}, volume = {5}, year = {2005}, pages = {23-29}, doi = {10.2140/agt.2005.5.23}, zbl = {1061.57024}, language = {en}, url = {http://dml.mathdoc.fr/item/02139860} }
Klein, John R. Poincaré submersions.. Geometry & Topology, Tome 5 (2005) pp. 23-29. doi : 10.2140/agt.2005.5.23. http://gdmltest.u-ga.fr/item/02139860/