Visible Quantum Cutting in LiGdF4:Eu3+ Through Downconversion Wegh, Rene T. ; Donker, Harry ; Oskam, Koenraad D. ; Meijerink, Andries Abstract Publication: Science Pub Date: January 1999 DOI: 10.1126/science.283.5402.663 Bibcode: 1999Sci...283..663W