M. J. Palacios Carvajal, S. G. Ortega Huilcapi, D. A. Gualli Bonilla, and M. R. Manzano Cepeda, “Behavior of mortars with local aggregates from Zone 3 of Ecuador, during 3D printing.”, CCD, vol. 4, no. 1.2, pp. 220-234, Mar. 2021.