1. Adams, C.A., 1999. Natural colouring materials. In: Nutricines—Food Components in Health and Nutrition. Nottingham University Press, Nottingham, UK, Chapter 7, pp. 107–117.
2. The intestinal flora of the chicken in the period 2 to 6 weeks of age, with particular reference to the anaerobic bacteria;Barnes;Br. Poult. Sci.,1972
3. Treatment of H. pylori infected mice with antioxidant astaxanthin reduces gastric inflammation, bacterial load and modulates cytokine release by splenocytes;Bennedsen;Immunol. Lett.,1999
4. Bislev Hansen, K., Tauson, A.-H., Inborr, J., 1999. Algemel (Haematococcus pluvialis) med ett höjt inhold av astaxanthin som fodersupplement til mink (Mustela vison). Effekt på reproduktion, hvalpetilvaekst för fravaenning og daglig maelkeoptagelse. Annual Report of the Danish Fur Breeders Research Centre, 55–58. (in Danish).
5. Epidemiology of Campylobacter jejuni;Blaser;Epidemiol. Rev.,1983