1. Floral-type identification and quality evaluation of some honey types;Abu-Tarboush;Food Chem.,1993
2. Honey tables showing the relationship between various hydrometer scales and refractive index to moisture content and weight per gallon of honey;Chatway;Can. Bee J.,1935
3. Codex Alimentarius Commission-CAC (1981). Vol.II, 1st ed. Codex Stan. 12.
4. Decreto-lei No. 131/85 (Portuguese Legislation) 29 April 1985.
5. Directive 74/409/EC, relating to harmonisation of legislation concerning honey, J.O.E.C., No. L291-19/10/74.