SpringerLink (Online service), Dietz, J. L. G., Liu, K., & Filipe, J. (2013). Knowledge discovery, knowledge engineering and knowledge management: 4th international joint conference, IC3K 2012, Barcelona, Spain, October 4-7, 2012, Revised Selected Papers. Springer Berlin Heidelberg Imprint: Springer.

SpringerLink (Online service), Jan L. G. Dietz, Kecheng Liu, and Joaquim Filipe. Knowledge Discovery, Knowledge Engineering and Knowledge Management: 4th International Joint Conference, IC3K 2012, Barcelona, Spain, October 4-7, 2012, Revised Selected Papers. Berlin, Heidelberg: Springer Berlin Heidelberg Imprint: Springer, 2013.

SpringerLink (Online service), et al. Knowledge Discovery, Knowledge Engineering and Knowledge Management: 4th International Joint Conference, IC3K 2012, Barcelona, Spain, October 4-7, 2012, Revised Selected Papers. Springer Berlin Heidelberg Imprint: Springer, 2013.