For more information on African Elephants (Loxodonta Africana):
Archie, E. A., Morrison, T. A., Foley, C. A. H., Moss, C. J. & Alberts, S. C. 2006. Dominance rank relationships among wild female African elephants, Loxodonta africana. Animal Behaviour, 71, 117-127.
Chiyo, P. I., Archie, E. A., Hollister-Smith, J. A., Lee, P. C., Poole, J. H., Moss, C. J. & Alberts, S. C. 2011. Association patterns of African elephants in all-male groups: the role of age and genetic relatedness. Animal Behaviour, 81, 1093-1099.
de Silva, S. & Wittemyer, G. 2012. A Comparison of Social Organization in Asian Elephants and African Savannah Elephants. International Journal of Primatology, 33, 1125-1141.
Evans, K. E. & Harris, S. 2008. Adolescence in male African elephants, Loxodonta africana, and the importance of sociality. Animal Behaviour, 76, 779-787.
Foley, C., Pettorelli, N. & Foley, L. 2008. Severe drought and calf survival in elephants. Biology Letters, 4, 541-544.
Gobush, K., Kerr, B. & Wasser, S. 2009. Genetic relatedness and disrupted social structure in a poached population of African elephants. Molecular Ecology, 18, 722-734.
Gobush, K. S., Mutayoba, B. M. & Wasser, S. K. 2008. Long-Term Impacts of Poaching on Relatedness, Stress Physiology, and Reproductive Output of Adult Female African Elephants. Conservation Biology, 22, 1590-1599.
McComb, K., Moss, C., Durant, S. M., Baker, L. & Sayialel, S. 2001. Matriarchs as repositories of social knowledge in African elephants. Science, 292, 491-494.
McComb, K., Shannon, G., Durant, S. M., Sayialel, K., Slotow, R., Poole, J. & Moss, C. 2011. Leadership in elephants: the adaptive value of age. Proceedings of the Royal Society B-Biological Sciences, 278, 3270-3276.
Slotow, R., van Dyk, G., Poole, J., Page, B. & Klocke, A. 2000. Older bull elephants control young males. Nature, 408, 425-426.
Vance, E. A., Archie, E. A. & Moss, C. J. 2009. Social networks in African elephants. Computational and Mathematical Organization Theory, 15, 273-293.
Wittemyer, G., Ganswindt, A. & Hodges, K. 2007a. The impact of ecological variability on the reproductive endocrinology of wild female African elephants. Hormones and Behavior, 51, 346-354.
Wittemyer, G., Getz, W. M., Vollrath, F. & Douglas-Hamilton, I. 2007b. Social dominance, seasonal movements, and spatial segregation in African elephants: a contribution to conservation behavior. Behavioral Ecology and Sociobiology, 61, 1919-1931.
Additonal Links:
http://wwf.panda.org/
http://www.elephanttag.org/