C. Seitz, C. Legat, и J. Neidig. Workshops Proceedings of the 5th International Conference on Intelligent Environments, том 4 из Ambient Intelligence and Smart Environments, стр. 51--57. Amsterdam, IOS Press, (2009)
T. Fujita, K. Masaki, F. Suzuki, и K. Maenaka. CME 2007: IEEE/ICME International Conference on Complex Medical Engineering, Beijing, China, стр. 416-420. (2007)