Cancio, P.De Natale, P.Giusfredi, G.Mazzotti, D.2004-12-032004-12-0320012001http://hdl.handle.net/2003/100510.17877/DE290R-10868enThe American Physical SocietyPhysical Review Letters530Spatial Mode Control of Radiation Generated by Frequency Difference in Periodically Poled Crystals10.1103/PhysRevLett.87.113901article (journal)