1. S. Ferrara, R. Kallosh and A. Strominger, N = 2 extremal black holes, Phys. Rev. D 52 (1995) 5412 [ hep-th/9508072 ] [ INSPIRE ].
2. S. Ferrara, G.W. Gibbons and R. Kallosh, Black holes and critical points in moduli space, Nucl. Phys. B 500 (1997) 75 [ hep-th/9702103 ] [ INSPIRE ].
3. K. Goldstein, N. Iizuka, R.P. Jena and S.P. Trivedi, Non-supersymmetric attractors, Phys. Rev. D 72 (2005) 124021 [ hep-th/0507096 ] [ INSPIRE ].
4. S. Ferrara, K. Hayakawa and A. Marrani, Lectures on attractors and black holes, Fortsch. Phys. 56 (2008) 993 [ arXiv:0805.2498 ] [ INSPIRE ].
5. S. Bellucci, S. Ferrara, R. Kallosh and A. Marrani, Extremal black hole and flux vacua attractors, Lect. Notes Phys. 755 (2008) 115 [ arXiv:0711.4547 ] [ INSPIRE ].