1. ABTEMA-UOB Asociación Boliviana de Teledetección para el Medio Ambiente (ABTEMA) (Bolivian association of tele-detection for the environment.), 2000. Evaluación de los totorales en el ámbito boliviano del sistema TDPS (Evaluation of the totorales in the Bolivian environment of the system TDPS. In Spanish). PNUD, ALT, La Paz, Bolivia.
2. Anaerobic treatment of manure together with industrial waste;Ahring;Water Science and Technology,1992
3. Alzerreca, H., 1992. Overview of small ruminant research in the Bolivian Andean zone. In: Valdivia, C. (Ed.), Sustainable Crop-Livestock Systems for the Bolivian Highlands, Proceeding of an SR-CRSP Workshop, University of Missouri, Columbia.
4. Standard Method for the Examination of Water and Wastewater;APHA,2000
5. ASAE Standard, 2003. Manure production and characteristics. ASAE D384.1 FEB03, USA, pp. 683–685.