(原始内容存档于2019-02-24). How it works:Positron emission (PDF). [2012-06-14]. (原始内容存档 (PDF)于2013-02-08). Positron Emission Tomography Imaging at the University
and Emission Spectra of Rhodamine B (页面存档备份,存于互联网档案馆) Absorption and Emission Spectra of Rhodamine 6G (页面存档备份,存于互联网档案馆) Absorption and Emission Spectra