SOLÍS-GRANDA, L. E.; PÉREZ-MANZO, O. A.; BALÓN RAMOS, I. DEL R.; CARRASQUERO-RODRIGUEZ, E. J. DIAGNOSIS OF THE NEED TO IMPLEMENTATION THE "SIX SIGMA" METHODOLOGY IN MSMES OF MANUFACTURES IN THE CITY OF MILAGRO, ECUADOR. Universidad Ciencia y Tecnología, v. 23, n. 90, p. 7, 8 Apr. 2019.