* Dr. Chuck's Blog: Teaching, Learning, Technology, Standards, Interoperability, etc., [http://www.dr-chuck.com/csev-blog/2012/03/connecting-ims-learning-tools-interoperability-and-saml/ "Connecting IMS Learning Tools Interoperability and SAML"]
* [https://elearningindustry.com/learning-tool-interoperability-part-elearning-application eLearning Industry, "Why Learning Tool Interoperability Should Be Part Of Your eLearning Application"]