Light-weight directory access protocol (LDAP) and X.500

• UMich Documentation
• RFC 1777
• X.500 web interface
• David M. Piscitello and A. Lyman Chapin: Open Systems Networking - TCP/IP and OSI, Addison Wesley, Chapter 7.
• Understanding X.500 - The Directory
• An alternative to standard X.500 naming
• The contacts directory
• LDAP for Perl
• LDAP Administrator tool