1. Production of high quality Spirulina at Earthrise Farms;Belay,1994
2. Mass culture of Spirulina outdoors: The Earthrise Farms experience;Belay,1997
3. The biotechnology of mass culturing Dunaliella for products of commercial interest;Ben-Amotz,1989
4. Production of beta-carotene from Dunaliella;Ben-Amotz,1999