Source: http://www.univ-bejaia.dz/jspui/bitstream/123456789/5248/1/Activit%C3%A9%20antioxydante%20de%20quelques%20vari%C3%A9t%C3%A9s%20du%20raisin%20cultiv%C3%A9es%20dans%20la%20r%C3%A9gion%20de%20Bejaia.pdf