ALLEY, T. R. 1982. Competition theory, evolution and the concept of an ecological niche. Acta Biotheoretica 31:165–179.
ARANDJELOVIC, M., HEAD, J., BOESCH, C., KUEHL, H., ROBBINS, M. M., MAISELS, F. & VIGILANT, L. 2010. Effective non-invasive genetic monitoring of multiple wild western gorilla groups. Biological Conservation 143:1780–1791.
BAAYEN, R. H. 2008. Analyzing linguistic data. Cambridge University Press, Cambridge. 390 pp.
BALCOMB, S. R., CHAPMAN, C. A. & WRANGHAM, R. W. 2000. Relationship between chimpanzee (Pan troglodytes) density and large fleshy-fruit tree density: conservation implications. American Journal of Primatology 51:197–203.
BEGON, M., TOWNSEND, C. R. & HARPER, J. L. 2006. Ecology: from individuals to ecosystems. (Fourth edition). Blackwell Publishing, Oxford. 738 pp.
BIRCH, L. C. 1957. The meanings of competition. American Naturalist 91:5–18.
BLAKE, S. 2002. The ecology of forest elephant distribution and its implications for conservation. Ph.D. thesis, Dept of Zoology, University of Edinburgh. 307 pp.
BREUER, T., NDOUNDOU, M. & FISHLOCK, V. 2005. First observation of tool use in wild gorillas. PLoS Biology 3:e380.
CHAPMAN, C. A., CHAPMAN, L. A., WRANGHAM, R., HUNT, K., GEBO, D. & GARDNER, L. 1992. Estimators of fruit abundance of tropical trees. Biotropica 24:527–531.
CONNELL, J. H. 1983. On the prevalence and relative importance of interspecific competition: evidence from field experiments. American Naturalist 122:661–696.
DOBSON, A. J. 2002. An introduction to Generalized Linear Models. Chapman & Hall/CRC, Boca Raton. 225 pp.
DORAN-SHEEHY, D., MONGO, P., LODWICK, J. & CONKLIN-BRITTAIN, N. L. 2009. Male and female western gorilla diet: preferred foods, use of fallback resources, and implications for ape versus old world monkey foraging strategies. American Journal of Physical Anthropology 140:727–738.
ECCARD, J. A. & YLÖNEN, H. 2003. Interspecific competition in small rodents: from populations to individuals. Evolutionary Ecology 17:423–440.
ERIKSSON, M. O. G. 1979. Competition between freshwater fish and goldeneyes Bucephala clangula (L.) for common prey. Oecologia 41:99–107.
GAUSE, G. F. 1934. The struggle for existence. Williams and Wilkins, Baltimore. 163 pp.
GRANT, P. R. 1972. Interspecific competition among rodents. Annual Review of Ecology and Systematics 3:79–106.
HANSEN, R. M. & UECKERT, D. N. 1970. Dietary similarity of some primary consumers. Ecology 51:640–648.
HARDIN, G. 1960. The competitive exclusion principle. Science 131:1292–1297.
HEAD, J. S., BOESCH, C., MAKAGA, L. & ROBBINS, M. M. 2011. Sympatric chimpanzees (Pan troglodytes troglodytes) and gorillas (Gorilla gorilla gorilla) in Loango National Park, Gabon: dietary composition, seasonality and inter-site comparisons. International Journal of Primatology 32:755–775.
KREBS, C. J. 2009. Ecology. (Sixth edition). Pearson Education, London. 655 pp.
KURODA, S., NISHIHARA, T., SUZUKI, S. & OKO, R.A. 1996. Sympatric chimpanzees and gorillas in the Ndoki Forest, Congo. Pp. 71–81 in McGrew, W., Marchant, L. & Nishida, T. (eds.). Great ape societies. Cambridge University Press, Cambridge.
LAMBERT, J. E. 2002. Resource switching and species coexistence in guenons: a community analysis of dietary flexibility. Pp. 309–324 in Glenn, M. E. & Cords, M. (eds.). The guenons: diversity and adaptation in African monkeys. Kluwer Academic Press, New York.
LONGEPIERRE, S., HAILEY, A. & GRENOT, C. 2001. Home range area in the tortoise Testudo hermanni in relation to habitat complexity: implications for conservation of biodiversity. Biodiversity and Conservation 10:1131–1140.
MCCULLAGH, P. & NELDER, J. A. 2008. Generalized linear models. Chapman and Hall, London. 300 pp.
MCGREW, W. C. 1977. Socialization and object manipulation of wild chimpanzees. Pp. 261–288 in Chevalier-Skolnikoff, S. & Poirier, F. E. (eds.). Primate bio-social development. Garland, New York.
MITCHELL, B. D. & BANKS, P. B. 2005. Do wild dogs exclude foxes? Evidence for competition from dietary and spatial overlaps. Austral Ecology 30:581–591.
MORRIS, D. M. 1996. Coexistence of specialist and generalist rodents via habitat selection. Ecology 77:2352–2364.
PERSSON, L. 1985. Asymmetrical competition: are larger animals competitively superior? American Naturalist 126:261–266.
RAZGOUR, O., KORINE, C. & SALTZ, D. 2011. Does interspecific competition drive patterns of habitat use in desert bat communities? Oecologia 167:493–502.
ROGERS, M. E., ABERNATHY, K., MAGDALENA, B., CIPOLLETTA, C., DORAN, D., MCFARLAND, K., NISHIHARA, T., REMIS, M. & TUTIN, C. E. G. 2004. Western Gorilla Diet: a synthesis from six sites. American Journal of Primatology 64:173–192.
SALE, P. F. 1974. Overlap in resource use, and interspecific competition. Oecologia 17:245–256.
SCHOENER, T. W. 1983. Field experiments on interspecific competition. American Society of Naturalists 122:240–285.
TUTIN, C. E. G. & FERNANDEZ, M. 1993. Composition of the diet of chimpanzees and comparisons with that of sympatric lowland gorillas in the Lopé reserve, Gabon. American Journal of Primatology 30:195–211.
VENABLES, W. N. & RIPLEY, B. D. 2002. Modern applied statistics with S. (Fourth edition). Springer Press, New York. 495 pp.
WIENS, J. A. 1977. On competition and variable environments. American Scientist 65:590–597.
WHITE, L. J. T., TUTIN, C. E. G. & FERNANDEZ, M. 1994. Behavioural and dietary similarities of elephants and apes in the Lopé Reserve, Gabon: should elephants be re-classified as apes? Pp. 19–27 in Thierry, B., Anderson, J. R., Roeder, J. J. & Herrenshmidt, N. (eds.). Current primatology Vol. 1: ecology and evolution. University Louis Pasteur, Strasbourg.