@article{05029605, title = {Non-isotopic Heegaard splittings of Seifert fibered spaces. With an appendix by R.Weidmann.}, journal = {Geometry \& Topology}, volume = {6}, year = {2006}, pages = {351-372}, doi = {10.2140/agt.2006.6.351}, zbl = {1099.57015}, language = {en}, url = {http://dml.mathdoc.fr/item/05029605} }
Bachman, David; Derby-Talbot, Ryan;. Non-isotopic Heegaard splittings of Seifert fibered spaces. With an appendix by R.Weidmann.. Geometry & Topology, Tome 6 (2006) pp. 351-372. doi : 10.2140/agt.2006.6.351. http://gdmltest.u-ga.fr/item/05029605/