Fuente:
- http://www.opensource-techblog.com/2014/12/create-render-url-by-liferay-tag.html
- http://docs.exoplatform.com/public/index.jsp?topic=%2FPLF41%2Fsect-Reference_Guide-JavaServer_Pages_Portlet_Example-JSP_files_and_the_Portlet_Tag_Library.html
- http://www.liferaysavvy.com/2013/11/working-with-liferay-urls.html
- http://www.opensource-techblog.com/2014/12/create-render-url-by-portlet-tag-in-jsp.html
- http://www.opensource-techblog.com/2014/12/create-render-url-by-liferay-tag.html
- http://www.liferayfaces.org/web/guest/showcase/-/component/portlet/renderurl/general
- http://stackoverflow.com/questions/10099955/liferay-6-portletrenderurl-not-redirecting
- http://proliferay.com/form-submit-in-spring-mvc-portlet/
- http://www.opensource-techblog.com/2012/09/render-and-action-methods-in-spring-mvc.html
- http://simplespringtutorial.com/annotations.html
- http://www.techferry.com/articles/spring-annotations.html#Transactional
- http://www.liferaysavvy.com/2013/12/liferay-spring-portlet.html
- http://books.dzone.com/articles/spring-30-portlet-mvc-part-2
- https://code.google.com/p/portletsinaction/downloads/list
- http://www.theserverside.com/tutorial/WebSphere-Portal-7-and-Spring-30-Portlet-MVC-Integration
- http://blogs.isostech.com/portlet-development/development-simple-portlet-spring-mvc/