@article{GDZPPN002334054, title = {Casson's invariant of Seifert homology 3-spheres.}, journal = {Mathematische Annalen}, volume = {287}, year = {1990}, pages = {275-286}, zbl = {0674.57014}, url = {http://dml.mathdoc.fr/item/GDZPPN002334054} }
Fukuhara, Shinji; Matsumoto, Yukio. Casson's invariant of Seifert homology 3-spheres.. Mathematische Annalen, Tome 287 (1990) pp. 275-286. http://gdmltest.u-ga.fr/item/GDZPPN002334054/