@article{CM_1992__84_1_91_0, author = {Hain, Richard M.}, title = {Nil-manifolds as links of isolated singularities}, journal = {Compositio Mathematica}, pages = {91--99}, publisher = {Kluwer Academic Publishers}, volume = {84}, number = {1}, year = {1992}, zbl = {0767.57010}, mrnumber = {1183566}, language = {en}, url = {http://www.numdam.org/item/CM_1992__84_1_91_0/} }