evidence: - Uche T. Okpara et al., "Conflicts about Water in Lake Chad: Are Environmental, Vulnerability and Security Issues Linked?," Progress in Development Studies 15, no. 4 (October 2015): 308–25, https://doi.org/10.1177/1464993415592738. [...] - Uche T. Okpara, Lindsay C. Stringer, and Andrew J. Dougill, "Lake Drying and Livelihood Dynamics in Lake Chad: Unravelling the Mechanisms, Contexts and Responses," Ambio 45, no. 7 (November 2016): 781–95, https://doi.org/10.1007/s13280-016-0805-6. [...] - Okpara et al., "Conflicts about Water in Lake Chad," 308–25.