P.J.T. Leonard 2001. Multiple stellar systems: types and stability. In Encyclopedia of Astronomy and Astrophysics, P. Murdin (ed) online edition at Institute of PhysicsArchived 2012-07-09 at Archive.today
P.J.T. Leonard 2001. Multiple stellar systems: types and stability. In Encyclopedia of Astronomy and Astrophysics, P. Murdin (ed) online edition at Institute of PhysicsArchived 2012-07-09 at Archive.today