Smith V, Mansfield CA, Clayton (Trantham) L. Valuing a homeland security policy: countermeasures for the threats from shoulder mounted missiles. J Risk Uncertain. 2009;38(3):215-43.
Allan JS, Kanda P, Kennedy RC, Cobb EK, Anthony MS, Eichberg JW. Isolation and characterization of simian immunodeficiency virus from two subspecies of African green monkeys. Aids Res Hum Retrovir. 1990 Mar;6(3):275-85.