- World Internet Usage Statistics News and Population Stats, dostupno na Internet adresi http://www.internetworldstats.com/stats.htm
- Franjo Rebac: Infrastruktura javnog ključa, seminarski rad, dostupno na Internet adresi http://os2.zemris.fer.hr/pki/2005_rebac/index.html
- Leo Budin, Marin Golub: Predavanja iz predmeta Operacijski sustavi 2, Zagreb, 2007.
- Sunove stranice o X.509 certifikatima, dostupno na Internet adresi http://java.sun.com/j2se/1.3/docs/guide/security/cert3.html
- Peter Škoda: Certifikati – X.509, Fakultet elektrotehnike i računarstva u Zagrebu, dostupno na Internet adresi http://spvp.zesoi.fer.hr/seminari/2004/certifikati_x_509-pskoda.pdf
- RFC2459 Internet X.509 Public Key Infrastructure Certificate and Internet Protocol: http://tools.ietf.org/html/rfc2459
- RedHat Manual: http://tinyurl.com/b7tsj6
- Jxplorer, open source ldap browser: http://www.jxplorer.org/
- FINA DEMO PKI: http://demo-pki.fina.hr