2016-10-18T08:34:01.9970000Z
https://www.termdat.bk.admin.ch/entry/414738
PTB-Mitteilungen, Das Internationale Einheitensystem (SI), Heft 2, 2007, S. 178, Anh., Abs. 2
BIPM, The International System of Units (SI), 2006, p. 174, app. 3, para 2
BIPM, Le Système international d’unités (SI), 2006, p. 86, ann. 3, al. 2
ISS, Fotosensibilità individuale e abbronzatura ([Internet, 2016-03-23](http://www.iss.it/binary/sole/cont/Fotosensibilita.pdf))