R. Riedel, U. Starker, and R. Weth. Advances in Production Management Systems: Innovative and Knowledge-Based Production Management in a Global-Local World (Part I), volume 438 of IFIP Advances in Information and Communication Technology, Springer, Heidelberg, (2014)
P. Rangel, J. Carvalho Junior, M. Ramirez, and J. de Souza. Proceedings of the Sixth International Conference on Intelligent Environments (IE 2010), Kuala Lumpur, Malaysia, page 116--121. Los Alamitos, CA, IEEE Computer Society CPS, (2010)