Estimating the prevalence of African swine fever in Madagascar - Costard, Solenne; Randriamparany, T.; Humbert, C.; Franco, S.; Rasamoelina, H.; Rakotoharinome, M.; Rakotondrahanta, S.; Albina, F.; Roger, F.; Pfeiffer, Dirk U. (International Livestock Research Institute, 2009)