Bruun, G. M.Mottelson, B. R.2004-12-032004-12-0320012001http://hdl.handle.net/2003/199810.17877/DE290R-11691enThe American Physical SocietyPhysical Review Letters530Low Energy Collective Modes of a Superfluid Trapped Atomic Fermi Gas10.1103/PhysRevLett.87.270403article (journal)