José, S. R. C. ., Otoniel, M. S. P. . and Edgardo, C. S. L. . (2024) “Marketing 4.0 to Improve the Positioning of the Optical Products of a Private Company, Trujillo, Peru”, International Journal of Membrane Science and Technology, 10(3), pp. 3631-3647. doi: 10.15379/ijmst.v10i3.3427.