“…In recent years, there are also a lot of attention being paid to various aspects of squashed Kaluza-Klein black holes. For example, thermodynamical properties [12,13,14,15,16,17], Hawking radiation [6,18,19,20,21,22,23], perturbation stability [24,25,26], quasinormal modes [27,28], gravitational lens [29,30,31], geodesic motion [32] and Kerr/CFT correspondence [17] have been investigated for this kind of black holes in recent years. In particular, Cai et al, [12] first adopted the boundary counter-term method [33,34] to investigate thermodynamics of the static charged, squashed Kaluza-Klein black holes found in Ref.…”