Benhar, OmarFabrocini, AdelchiFantoni, Stefano2004-12-032004-12-0320012001http://hdl.handle.net/2003/65210.17877/DE290R-10500enThe American Physical SocietyPhysical Review Letters530Ambiguities in the Implementation of the Impulse Approximation for the Response of Many-Fermion Systems10.1103/PhysRevLett.87.052501article (journal)