1. Alonso, J., Brady, T., Cooper, D., Delzant, T., Ferlini, V., Lustig, M., Mihalik, M., Shapiro, M., Short, H.: Notes on word hyperbolic groups. In: Ghys, E., Haefliger, A., Verjovsky, A. (eds.) Group Theory from a Geometrical Viewpoint. World Scientific, Singapore (1992)
2. Bermudo, S., Carballosa, W., Rodríguez, J. M., Sigarreta, J. M.: On the hyperbolicity of edge-chordal and path-chordal graphs, Submitted
3. Bermudo, S., Rodríguez, J.M., Sigarreta, J.M.: Computing the hyperbolicity constant. Comput. Math. Appl. 62, 4592–4595 (2011)
4. Bermudo, S., Rodríguez, J.M., Sigarreta, J.M., Tourís, E.: Hyperbolicity and complement of graphs. Appl. Math. Lett. 24, 1882–1887 (2011)
5. Bowditch, B.H.: Notes on Gromov’s hyperbolicity criterion for path-metric spaces. In: Ghys, E., Haefliger, A., Verjovsky, A. (eds.) Group Theory from a Geometrical Viewpoint, Trieste, pp. 64–167. World Scientific, River Edge (1991)