1. Coulson D., Goodman O. A., Hodgson C. D., and Neumann W. D., “Computing arithmetic invariants of 3-manifolds,” Experiment. Math. 9(1), 127–152 (2000).
2. Culler M., “Lifting representations to covering groups,” Adv. Math. 59(1), 64–79 (1986).
3. Fenchel W., Elementary Geometry in Hyperbolic Space, Vol. 11 (Walter de Gruyter & Co., Berlin, 1989).
4. Hilden H. M., Lozano M. T., and Montesinos-Amilibia J. M., “On a remarkable polyhedron geometrizing the figure eight knot cone manifolds,” J. Math. Sci. Univ. Tokyo 2(3), 501–561 (1995).
5. Hilden H. M., Lozano M. T., and Montesinos-Amilibia J. M., “On the arithmetic 2-bridge knots and link orbifolds and a new knot invariant,” J. Knot Theory Ramifications 4(1), 81–114 (1995).