Johnathan Nightingale (September 2, 2011). "DigiNotar Removal Follow Up". Mozilla Security Blog. Archived from the original on September 21, 2011. Retrieved September 4, 2011.
Johnathan Nightingale (September 2, 2011). "DigiNotar Removal Follow Up". Mozilla Security Blog. Archived from the original on September 21, 2011. Retrieved September 4, 2011.