@article{GDZPPN002443120, title = {On the density of fiber sum factors.}, journal = {Mathematische Zeitschrift}, volume = {217}, year = {1994}, pages = {645-656}, zbl = {0812.16018}, url = {http://dml.mathdoc.fr/item/GDZPPN002443120} }
Dräxler, Peter. On the density of fiber sum factors.. Mathematische Zeitschrift, Tome 217 (1994) pp. 645-656. http://gdmltest.u-ga.fr/item/GDZPPN002443120/