set up your own free social network for anything at http://kewlmates.com hosted free. unlimited space! twitter friendly! free upda [from http://twitter.com/jomiralb/statuses/1216765928]
A. Weichselbraun, G. Wohlgenannt, and A. Scharl. 9th International Workshop on Web Semantics, 21st International Conference
on Database and Expert Systems Applications (DEXA 2010), page 193--197. Bilbao, Spain, IEEE Computer Society Press, (August 2010)
F. Parreiras, A. de Oliveira e Silva, J. Bastos, and W. Brandao. Proceedings of the 5th National Meeting on Education and Research
on Information Science (V CINFORM), Salvador, BA, Brazil, June 28-30,
2004, (2004)Portuguese.