1. AddThis, http://www.addthis.com/
2. Adida, B., Birbeck, M., McCarron, S., Herman, I.: rdfa Core 1.1. w3c Recommendation (Jun 2012), http://www.w3.org/TR/2012/REC-rdfa-core-20120607/
3. Alarcón, R., Wilde, E.: Linking Data from restful Services. In: Third Workshop on Linked Data on the Web (2010), http://events.linkeddata.org/ldow2010/papers/ldow2010_paper10.pdf
4. Amundsen, M.: Hypermedia types. In: Wilde, E., Pautasso, C. (eds.) REST: From Research to Practice, pp. 93--116. Springer, New York (2011), http://dx.doi.org/10.1007/978-1-4419-8303-9_4
5. Bergman, E.: Making technology invisible: A conversation with Don Norman. Information Appliances and Beyond: Interaction Design for Consumer Products pp. 10--26 (2000).