Dutra, S. M.Eliel, E. R.Nienhuis, G.Woerdman, J. P.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1895810.17877/DE290R-1708enThe American Physical SocietyPhysical Review Letters530Comment on "Orbital and Intrinsic Angular Momentum of Single Photons and Entangled Pairs of Photons Generated by Parametric Down-Conversion"10.1103/PhysRevLett.86.5208article (journal)