Smit, I. P., Grant, C. C., & Devereux, B. J. (2007). Do artificial waterholes influence the way herbivores use the landscape? Herbivore distribution patterns around rivers and artificial surface water sources in a large African savanna park. Biological Conservation, 136(1), 85-99. https://doi.org/10.1016/j.biocon.2006.11.009

Smit, Izak P.J., Cornelia C. Grant, and Bernard J. Devereux. "Do Artificial Waterholes Influence the Way Herbivores Use the Landscape? Herbivore Distribution Patterns Around Rivers and Artificial Surface Water Sources in a Large African Savanna Park." Biological Conservation 136, no. 1 (2007): 85-99. https://doi.org/10.1016/j.biocon.2006.11.009.

Smit, Izak P.J., et al. "Do Artificial Waterholes Influence the Way Herbivores Use the Landscape? Herbivore Distribution Patterns Around Rivers and Artificial Surface Water Sources in a Large African Savanna Park." Biological Conservation, vol. 136, no. 1, 2007, pp. 85-99, https://doi.org/10.1016/j.biocon.2006.11.009.