1. EC (European Commission) 2002 online. Opinion of the Scientific Committee for Animal Nutrition on the use of Kofa ® Grain pH5 (a mixture of sodium benzoate, propionic acid and sodium propionate) in feedingstuffs for pigs, cattle for fattening and dairy cows ec.europa.eu/food/fs/sc/scan/out84_en.pdf
2. Opinion of the Panel on additives and products or substances used in animal feed (FEEDAP) on the safety and efficacy of Kofa®Grain pH 5 - (a mixture of sodium benzoate, propionic acid and sodium propionate as a feed additive for cattle for fattening;EFSA (European Food Safety Authority);EFSA Journal,2006
3. Scientific opinion on safety and efficacy of sodium benzoate, propionic acid and sodium propionate for pigs, poultry, bovines, sheep, goats, rabbits, horses;EFSA (European Food Safety Authority);EFSA Journal,2011