Hoffmann, A., Bittner, E. A. C. & Leimeister, J. M. (2013). The Emergence of Mutual and Shared Understanding in the System Development Process. In J. Doerr & A. L. Opdahl (ed.),Requirements Engineering: Foundation for Software Quality, Lecture Notes in Computer Science (pp. 174-189). Springer Verlag. 

Jäschke, R., Hotho, A., Schmitz, C., Ganter, B. & Stumme, G. (2008). Discovering Shared Conceptualizations in Folksonomies. Journal of Web Semantics, 6, 38-53. 

Jäschke, R., Hotho, A., Schmitz, C., Ganter, B. & Stumme, G. (2008). Discovering Shared Conceptualizations in Folksonomies. Journal of Web Semantics, 6, 38-53. 

Mathes, A. (2004). Folksonomies -- Cooperative Classification and Communication Through Shared Metadata .