http://www.plugmasters.com.br/sys/materias/541/1/Annotations-em-uso

http://javacomfarinha.blogspot.com/2007/05/annotations.html

http://www.franciscosouza.net/2009/11/05/trabalhando-com-annotations-em-java/

http://www.guj.com.br/posts/list/46794.java