Antoine Deza Tamás Terlaky Feng Xie Yuriy Zinchenko Diameter and Curvature: Intriguing Analogies. 221-225 2008 31 Electronic Notes in Discrete Mathematics http://dx.doi.org/10.1016/j.endm.2008.06.044 db/journals/endm/endm31.html#DezaTXZ08