1. S. Ferrara, R. Kallosh and A. Strominger, N=2 extremal black holes, Phys. Rev. D 52 (1995) 5412 [ hep-th/9508072 ] [ SPIRES ].
2. A. Strominger, Macroscopic entropy of N = 2 extremal black holes, Phys. Lett. B 383 (1996) 39 [ hep-th/9602111 ] [ SPIRES ].
3. S. Ferrara and R. Kallosh, Supersymmetry and attractors, Phys. Rev. D 54 (1996) 1514 [ hep-th/9602136 ] [ SPIRES ].
4. K. Behrndt et al., Classical and quantum N = 2 supersymmetric black holes, Nucl. Phys. B 488 (1997) 236 [ hep-th/9610105 ] [ SPIRES ].
5. K. Behrndt, D. Lüst and W.A. Sabra, Stationary solutions of N = 2 supergravity, Nucl. Phys. B 510 (1998) 264 [ hep-th/9705169 ] [ SPIRES ].