Guerrero Varga, L.E. et al. 2014. Análisis Social, Económico y Ambiental del sector Friolero: perspectiva de pequeños productores (Social, economic and environmental analysis of the dry bean producers: A perspective on small size Costa Rican farmers). Tec Empresarial. 8, 2 (Sep. 2014), Pág. 19–28. DOI:https://doi.org/10.18845/te.v8i2.1986.