Wasser, S. K., Shedlock, A. M., Comstock, K., Ostrander, E. A., Mutayoba, B., & Stephens, M. (2004). Assigning African elephant DNA to geographic region of origin: Applications to the ivory trade. National Academy of Sciences.

Wasser, Samuel K., Andrew M. Shedlock, Kenine Comstock, Elaine A. Ostrander, Benezeth Mutayoba, και Matthew Stephens. Assigning African Elephant DNA to Geographic Region of Origin: Applications to the Ivory Trade. National Academy of Sciences, 2004.

Wasser, Samuel K., et al. Assigning African Elephant DNA to Geographic Region of Origin: Applications to the Ivory Trade. National Academy of Sciences, 2004.