1. Method 2011.11. Protein (crude) in Animal Feed, Forage (Plant Tissue), Grain, and Oilseeds Official Methods of Analysis;AOAC,2001
2. ASAE 319.4. Method of Determining and Expressing Fineness of Feed Materials by Sieving S319.4;ASAE,2008
3. Potential of agro-residues as sources of bioactive compounds;Babbar,2014
4. Sources of alpha-, beta-, gamma-, delta- and epsilon-carotenes: a twentieth century review;Barbosa-Filho;Braz. J. Pharmacog.,2008
5. The Global Market for Carotenoids;BCC,2011