1. Official Methods of Analysis of the AOAC International;AOAC International,2005
2. Standard S319: Method of determining and expressing fineness of feed material by sieving;ASAE,1995
3. Essential fatty acids in poultry nutrition;Balnave;Worlds Poult. Sci. J.,1970
4. Response of laying hens to dietary supplementation with energetically equivalent amounts of maize starch or maize oil;Balnave;J. Sci. Food Agric.,1971
5. Real Decreto 2257/1994 por el que se aprueba los métodos oficiales de análisis de piensos o alimentos para animales y sus primeras materias;Boletín Oficial del Estado;BOE,1995