@article{05029492, title = {Mappings of the sphere to a simply connected space.}, journal = {Zapiski Nauchnykh Seminarov POMI}, volume = {321}, year = {2005}, pages = {159-194}, doi = {10.1007/s10958-007-0441-6}, zbl = {1151.55302}, language = {en}, url = {http://dml.mathdoc.fr/item/05029492} }
Podkorytov, S.S. Mappings of the sphere to a simply connected space.. Zapiski Nauchnykh Seminarov POMI, Tome 321 (2005) pp. 159-194. doi : 10.1007/s10958-007-0441-6. http://gdmltest.u-ga.fr/item/05029492/