Olivares-Mendez, Miguel A., Fu, Changhong, Ludivig, Philippe, Bissyandé, Tegawendé F., Kannan, Somasundar, Zurad, Maciej, Annaiyan, Arun, Voos, Holger, Campoy, Pascual, "Towards an autonomous vision-based unmanned aerial system against wildlife poachers.", Sensors, 2015