@article{GDZPPN002418215, title = {Singular Circle Fiberings.}, journal = {Mathematische Zeitschrift}, volume = {147}, year = {1976}, pages = {89-100}, zbl = {0321.55037}, url = {http://dml.mathdoc.fr/item/GDZPPN002418215} }
Edmonds, Allan L.; Fintushel, Ronald. Singular Circle Fiberings.. Mathematische Zeitschrift, Tome 147 (1976) pp. 89-100. http://gdmltest.u-ga.fr/item/GDZPPN002418215/