1. Mathematical Surveys and Monographs;Amorós, J.,1996
2. Self-duality in four-dimensional Riemannian geometry;Atiyah, M. F.;Proc. Roy. Soc. London Ser. A,1978
3. Aspects of Mathematics, D4;Barthel, Gottfried,1987
4. Propriétés globales de l’espace de twisteurs;De Bartolomeis, Paolo;Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl.,1991
5. Some curious Kleinian groups and hyperbolic 5-manifolds;Belegradek, I.;Transform. Groups,1997