● Zhilina TN,Zavarzin GA,Rainey F,Kevbrin VV,Kostrikina NA,Lysenko AM (1996). Spirochaeta alkalica sp. nov., Spirochaeta africana sp. nov., and Spirochaeta asiatica sp. nov., alkaliphilic anaerobes from the Continental Soda Lakes in Central Asia and the East African Rift. Int. J. Syst. Bacteriol.46, 305-12.