Hempel, John. "Orientation Reversing Involutions and the First Betti Number for Finite Coverings of 3-Manifolds.." Inventiones mathematicae 67 (1982): 133-142. <http://eudml.org/doc/142904>.
@article{Hempel1982, author = {Hempel, John}, journal = {Inventiones mathematicae}, keywords = {orientation reversing involutions; first Betti number for finite coverings of 3-manifolds; sufficiently large 3-manifold; irreducible 3- manifold; hyperbolic dodecahedral space}, pages = {133-142}, title = {Orientation Reversing Involutions and the First Betti Number for Finite Coverings of 3-Manifolds.}, url = {http://eudml.org/doc/142904}, volume = {67}, year = {1982}, }
TY - JOUR AU - Hempel, John TI - Orientation Reversing Involutions and the First Betti Number for Finite Coverings of 3-Manifolds. JO - Inventiones mathematicae PY - 1982 VL - 67 SP - 133 EP - 142 KW - orientation reversing involutions; first Betti number for finite coverings of 3-manifolds; sufficiently large 3-manifold; irreducible 3- manifold; hyperbolic dodecahedral space UR - http://eudml.org/doc/142904 ER -