(en) « Scenarios of the impact of local and upstream changes in climate and water use on hydro-ecology in the Okavango Delta, Botswana », Journal of Hydrology, vol. 331, nos 1-2, , p. 73–84 (ISSN0022-1694, DOI10.1016/j.jhydrol.2006.04.041, lire en ligne, consulté le ).
(en) David Potten, « Etsha: A Successful Resettlement Scheme », Botswana Notes and Records, vol. 8, , p. 105–119 (ISSN0525-5090, lire en ligne, consulté le )
(en) « Scenarios of the impact of local and upstream changes in climate and water use on hydro-ecology in the Okavango Delta, Botswana », Journal of Hydrology, vol. 331, nos 1-2, , p. 73–84 (ISSN0022-1694, DOI10.1016/j.jhydrol.2006.04.041, lire en ligne, consulté le ).
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(en) David Potten, « Etsha: A Successful Resettlement Scheme », Botswana Notes and Records, vol. 8, , p. 105–119 (ISSN0525-5090, lire en ligne, consulté le )
(en) « Scenarios of the impact of local and upstream changes in climate and water use on hydro-ecology in the Okavango Delta, Botswana », Journal of Hydrology, vol. 331, nos 1-2, , p. 73–84 (ISSN0022-1694, DOI10.1016/j.jhydrol.2006.04.041, lire en ligne, consulté le ).