@article{CMH_1990__65_3_140200,
     author = {J.A. Seade and B.F. Steer},
     title = {Complex singularities and the framed cobordism class of compact quotients of 3-dimensional {Lie} groups by discrete subgroups.},
     journal = {Commentarii mathematici Helvetici},
     pages = {349--374},
     publisher = {mathdoc},
     volume = {65},
     number = {3},
     year = {1990},
     zbl = {0733.57019},
     url = {http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140200/}
}