M. Arteaga Dalgo, M. J. Andrade Cuvi, and C. Moreno Guerrero, “Development relationship of color with anthocyanins and chlorophyll content in diferent degrees of maturity of mortiño (Vaccinium floribundum)”, Enfoque UTE, vol. 5, no. 2, pp. pp. 14 – 28, Jun. 2014.