8.Nakaya N, Honma Y, Goto Y. Cholesterol lowering effect of Spirulina. Nutr. Rep. Int. 1988, 37, 1329-1337. http://agris.fao.org/agris-search/search.do?recordID=US19890065227
9.Mathew B1, Sankaranarayanan R, Nair PP, Varghese C, Somanathan T, Amma BP, Amma NS, Nair MK. Evaluation of chemoprevention of oral cancer with Spirulina fusiformis. Nutr Cancer. 1995;24(2):197-202. http://www.ncbi.nlm.nih.gov/pubmed/8584455
10.Robin J. Marles, Marilyn L. Barrett, Joanne Barnes, Mary L. Chavez, Paula Gardiner, Richard Ko, Gail B. Mahady, Tieraona Low Dog, Nandakumara D. Sarma, Gabriel I. Giancaspro, Maged Sharaf & James Griffiths. United States Pharmacopeia Safety Evaluation of Spirulina. Critical Reviews in Food Science and Nutrition. Volume 51, Issue 7, 2011 http://www.tandfonline.com/doi/full/10.1080/10408391003721719