@article{IM_1990__100_2_143788, author = {Mikio Furuta}, title = {Homology cobordism group of homology 3-spheres.}, journal = {Inventiones mathematicae}, pages = {339--356}, publisher = {mathdoc}, volume = {100}, number = {2}, year = {1990}, zbl = {0716.55008}, url = {http://geodesic.mathdoc.fr/item/IM_1990__100_2_143788/} }