Colunga, G. B., Arriaga-Jordǭn, C. M., Velǭquez Beltran, L., Gonzǭlez-Ronquillo, M., Smith, D., Estrada-Flores, J., …Castelǭn-Ortega, O. A. (2005). Participatory Study on Feeding Strategies for Working Donkeys Used by Campesino Farmers in the Highla