@article{MAN_1990__287_1_164690,
     author = {Paul A. Kirk and Eric P. Klassen},
     title = {Chern-Simons invariants of 3-manifolds and representation spaces of knot groups.},
     journal = {Mathematische Annalen},
     pages = {343--368},
     year = {1990},
     volume = {287},
     number = {1},
     zbl = {0681.57006},
     url = {http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164690/}
}