„Diet, Energy and Global Warming“(PDF). Gidon Eshel, Pamela Martin. Earth Interactions, Vol. 10, pp. 1-17, March 2006. Suarchyvuotas originalas(PDF) 2010-06-10. Nuoroda tikrinta 2010-09-29.
„Diet, Energy and Global Warming“(PDF). Gidon Eshel, Pamela Martin. Earth Interactions, Vol. 10, pp. 1-17, March 2006. Suarchyvuotas originalas(PDF) 2010-06-10. Nuoroda tikrinta 2010-09-29.