1. Ashall C, Ellis PE (1962) Studies on numbers and mortality in field populations of the desert locust (Schistocerca gregaria Forskål). Anti-Locust Bull 38:1–59
2. Ashenafi ZT (2001) Common property resource management of an Afro-alpine habitat supporting a population of the critically endangered Ethiopian Wolf Canis simensis. PhD thesis, University of Kent, Canterbury
3. Ashenafi ZT, Coulson T, Sillero-Zubiri C, Leader-Williams N (2005) Behaviour and ecology of the Ethiopian wolf (Canis simensis) in a human-dominated landscape outside protected areas. Anim Conserv 8:113–121
4. Beehner JC, Berhanu G, Bergman TJ, McCann C (2008) Population estimate for geladas (Theropithecus gelada) living in and around the Simien Mountains National Park, Ethiopia. SINET 30:149–154
5. Buhl J, Sumpter DJT, Couzin ID, Hale JJ, Despland E, Miller ER, Simpson SJ (2006) From disorder to order in marching locusts. Science 312:1402–1406