1. Duncan, D.B., Kantor, S., 1997. Spectral imaging method and apparatus. US Patent No. 5677532.
2. Optic System Design;Fischer,2000
3. Improved hyperspectral imaging system for fecal detection on poultry carcasses;Heitschmidt;Transactions of the American Society of Agricultural and Biological Engineers,2007
4. Hopkins, M.F., 1999. Milti-spectral two dimensional imaging spectrometer. US Patent No. 5926283.
5. Near-infrared spectroscopic sensing system for online monitoring of milk quality during milking;Kawamura;Sensing and Instrumentation for Food Quality and Safety,2007