http://www.unesco.org/isis - The UNESCO website dedicated tot the ISIS software family. ABCD is a member of the Isis family.
http://bvsmodelo.bvsalud.org/php/level.php?lang=en&component=27&item=13 - The webpage of Bireme on ABCD. Date of latest update is unknown.
http://abcd.demo.bvsalud.org - Online demo of ABCD running at Bireme.
http://reddes.bvsaude.org/projects/abcd - Wiki on ABCD.
http://www.abcdlive.com.ar - Website from Alberto A. Rosenberg. He created a Live CD with Ubuntu 11.04 and ABCD0.1 Beta version. Note that the size of the download is 691MB.
http://www.kit.nl - The website of the Royal Tropical Institute, Amsterdam, The Netherlands