B. Wang et al., Geometry and topology of two kinds of extreme Reissner-Nordstrom-anti-de Sitter black holes - art. no. 047501, PHYS REV D, 6204(4), 2000, pp. 7501
Different geometrical and topological properties are shown for two kinds of
extreme Reissner-Nordstrom-anti-de Sitter black holes. The relationship be
tween the geometrical properties and the intrinsic thermodynamical properti
es are made explicit.