1. Frost & Sullivan, World Fatty Ester Markets, 2004.
2. Grand View Research, Fatty Acid Ester Market, San Francisco, 2016.
3. EU directive 2006/52/EC of 5 July 2006 amending Directive 95/2/EC on food additives other than colours and sweeteners and Directive 94/35/EC on sweeteners for use in foodstuffs.
4. Sulfated iron oxide: a proficient catalyst for esterification of butanoic acid with glycerol;Kaur;Ind. Eng. Chem. Res.,2015
5. H. Bjornberg, R.C. Jansson, A waterborne binder composition and use thereof, EP 2064295 A1, (2009).