N. Patel, and L. Sethi. Proceedings of the SPIE on Storage and Retrieval for Still Image and Video Databases, 2670, page 373--384. San Jose, USA, (1996)
N. Clemens, and C. Rose. New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005.
2005 First IEEE International Symposium on, page 37-42. (2005)