G. Di Fabbrizio, J. Wilpon, and T. Okken. Proceedings of the 11th International Conference on Multimodal Interfaces and the 6th Workshop on Machine Learning for Multimodal Interfaces (ICMI-MLMI '09), Cambridge, MA, USA, page 71-78. (2009)
D. Porta, Z. Tuncer, M. Wirth, and M. Hellenschmidt. Proceedings of the Eighth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM 2014), Rome, Italy, page 227-232. International Academy, Research and Industry Association (IARIA), (August 2014)
Z. Tuncer, D. Porta, M. Wirth, and M. Hellenschmidt. Proceedings of the 72th International Conference Agricultural Engineering (LAND.TECHNIK.2014), Verein Deutscher Ingenieure (VDI), (November 2014)
D. Porta, Z. Tuncer, M. Wirth, and M. Hellenschmidt. Proceedings of the Eighth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM 2014), Rome, Italy, page 227-232. International Academy, Research and Industry Association (IARIA), (August 2014)