1. Barron, J. L., & Thacker, N. A. (2005). Tutorial: Computing 2D and 3D optical flow. In Imaging science and biomedical engineering division (pp 1–12). Manchester: Medical School, University of Manchester. http://www.tina-vision.net/docs/memos/2004-012.pdf . Accessed July 07, 2010.
2. Bruno, E., & Pellerin, D. (2000). Robust motion estimation using spatial gabor filters. In G. Moncef & K. Paulti (Eds.), Proceeding of the 10th European signal processing conference (EUSIPCO) (pp. 1465–1468). Finland: Tampere. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.29.2170 . Accessed July 07, 2010.
3. Cointault, F., Paindavoine, M., & Sarrazin, P. (2002). Fast imaging system for particle projection analysis: application to fertilizer centrifugal spreading. Measurement Science and Technology, 13, 1087–1093.
4. Cointault, F., Sarrazin, P., & Paindavoine, M. (2003). Measurement of fertilizer granules motion on a centrifugal spreader with a fast imaging system. Precision Agriculture, 4, 279–295.
5. Cointault, F., & Vangeyte, J. (2005). Development of low cost high speed photographic imaging systems to measure outlet velocity of fertilizer granules during spreading. In International fertiliser society meeting, Proceeding 555, London, UK, 14 April. http://www.fertiliser-society.org/Proceedings/US/Prc555.HTM . Accessed July 07, 2010.