@article{01456975, title = {Double point self-intersection surfaces of immersions.}, journal = {Geometry \& Topology}, volume = {4}, year = {2000}, pages = {149-170}, doi = {10.2140/gt.2000.4.149}, zbl = {0941.57025}, language = {en}, url = {http://dml.mathdoc.fr/item/01456975} }
Asadi-Golmankhaneh, Mohammad A.; Eccles, Peter J. Double point self-intersection surfaces of immersions.. Geometry & Topology, Tome 4 (2000) pp. 149-170. doi : 10.2140/gt.2000.4.149. http://gdmltest.u-ga.fr/item/01456975/