Guest support status. [2007-05-27]. (原始内容存档于2020-11-25). Running Mac OS X as a QEMU/KVM Guest. [2014-08-20]. (原始内容存档于2020-11-08). status. Gnu.org. [2014-02-12]
PMID 16520862. doi:10.1039/b516702g. UV Absorber Portfolio Performance Data and Regulatory Status (页面存档备份,存于互联网档案馆), cosmetics.basf.de 存档副本. [2008-08-27]