M. Ries, P. Svoboda, and M. Rupp. Systems, Signals and Image Processing, 2008. IWSSIP 2008. 15th International Conference on, page 181 -184. (June 2008)
M. Claypool, and K. Claypool. Proceedings of the first annual ACM SIGMM conference on Multimedia systems, page 215--222. New York, NY, USA, ACM, (2010)