1. G. A. Terent’ev, et al., Motor Fuels from Alternative Sources (Khimiya, Moscow, 1989) [in Russian].
2. B. N. Kuznetsov, Motor Fuels from Raw Materials that are Alternative to Oil (Khimiya, Moscow, 2000) [in Russian]. www.pereplet.ru
3. Biofuel (2011). http://ru.wikipedia.org/wiki/
4. Global Biofuels Production up 17% in 2010 to Hit All-Time High of 105 Billion Liters. http://ru.wikipedia.org/
5. E. S. Pantskhava, M. G. Berengarten, and S. I. Vanshtein, Biogas Technologies (Mosk. Gos. Univ.Inzh. Ekol., Moscow, 2008) [in Russian].