1. DOP Aceituna Aloreña de Málaga https://www.alorenademalaga.com/[accessed September 2018].
2. DOP Aceituna de Mallorca http://olivademallorca.es/es/[accessed September 2018].
3. IGP Aceituna Manzanilla de Sevilla http://www.aceitunasevillana.com/es/author/apas/[accessed September 2018].
4. IOC International Olive Council http://www.internationaloliveoil.org[accessed June 2018].
5. R. H.Vaughn H. C.Douglas J. R.Gililland University of California 1943 Bulletin 678.