trou noir de Kerr

[1973] Relativity Twins in the Kerr Metric ; F. Landis Markley ; American Journal of Physics 41 (nov 1973) p. 1246 [lien]
[1997] A heuristic way of obtaining the Kerr metric ; Jörg Enderlein ; American Journal of Physics 65 (sep 1997) p. 897 [lien]