Rogers, Y., Price, S., Fitzpatrick, G., Fleck, R., Harris, E., Smith, H., Randell, C., Muller, H., O’Malley, C., Stanton, D., Thompson, M. and Wea, M.: Ambient Wood: Designing New Forms of Digital Augmentation for Learning Outdoors, Proc. International Conference on Interaction Design and Children 2004, pp. 3-10, ACMPress (2004).
Okada, M., Yamada, A., Tarumi, H., Yoshida, M. and Moriya, K.: DigitalEE II: RV-Augmented Interface Design for Networked Collaborative Environmental Learning, Designing for Change in Networked Learning Environment, Proc. Computer Supported Collaborative Learning 2003, Wasson, B., Ludvigsen, S. and Hoppe, U.(Eds.), pp. 265-274, Kluwer Academic (2003).
Takenaka, M., Inagaki, S., Ohkubo, M., Kuroda, H. and Doi, S.: Development of a Collaborative Learning Support System Using Camera-Equipped MobilePhones: A demonstrative experiment in a 1st-grade class of a Japanese elementaryschool, Proc. International Conference on Computers in Education 2004, pp. 457-465(2004).
Mitchell, K. and Race, N. J. P.: uLearn: Facilitating Ubiquitous Learning through Camera Equipped Mobile Phones, Proc. IEEE International Workshop on Wireless and Mobile Technologies in Education 2005, pp. 274-281(2005).