•  http://www.jumbabox.com/2008/05/doctrine-tutorial/
•  http://www.phpdoctrine.org/faq
•  http://www.phpdoctrine.org/documentation/manual/0_11/?chapter=getting-started#my-first-project-tutorial
•  http://codeigniter.com/wiki/Using_Doctrine_with_Code_Igniter/
•  http://blog.medryx.org/2008/10/04/codeigniter-and-doctrine/
•  http://www.teixi.net/hands_on_doctrine/?f=doctrine_learning.php
•  http://ruben.savanne.be/articles/integrating-zend-framework-and-doctrine
•  http://trac.symfony-project.com/wiki/sfDoctrinePlugin
•  http://drupal.org/project/doctrine
•  http://www.symfony.vn/blog/guide/convert-propel-schema-to-doctrine-schema/
•  http://www.lone-gunman.be/2008/03/20/why-i-switched-to-doctrine/
•  http://www.d4ly.com/archive/03/2008/cascade_many-to-many_relationships_with_php_doctrine
•  http://www.symfony-project.org/blog/2007/12/12/symfony-propel-and-doctrine
•  http://sonique6784.blogspot.com/2008/02/php-doctrine-orm-for-php.html
•  http://pookey.co.uk/blog/archives/19-Doctrine-ORM-and-Symfony.html
•  http://spindrop.us/2007/06/01/installing-a-php-that-can-do-symfonydoctrine-on-dreamhost/