@article{02139863, title = {Clover calculus for homology 3-spheres via basic algebraic topology.}, journal = {Geometry \& Topology}, volume = {5}, year = {2005}, pages = {71-106}, doi = {10.2140/agt.2005.5.71}, zbl = {1072.57008}, language = {en}, url = {http://dml.mathdoc.fr/item/02139863} }
Auclair, Emmanuel; Lescop, Christine. Clover calculus for homology 3-spheres via basic algebraic topology.. Geometry & Topology, Tome 5 (2005) pp. 71-106. doi : 10.2140/agt.2005.5.71. http://gdmltest.u-ga.fr/item/02139863/