Lee, S.-S. & Yong, H.-S.
(2007).
TagPlus: A Retrieval System using Synonym Tag in Folksonomy.
Proceedings of the 2007 International Conference on Multimedia and Ubiquitous Engineering (p./pp. 294--298),
Washington, DC, USA: IEEE Computer Society.
ISBN: 0-7695-2777-9
Nunninger, T. (2007).
Calculating Relevancy when Searching in Semantically and Hierarchically Structured Data as Exemplified with the eZ Publish Enterprise Content Management System�s Internal Search Engine.
Unpublished master's thesis
, Albert-Ludwigs-Universit�t Freiburg
.