Palacios, Javier, Marcel Paredes, Tito Castillo, and Oscar Paredes. “Mortar for 3D Printers Using River Sand, Portland Cement and Hydraulic Lime”. Scientific Review Engineering and Environmental Sciences (SREES) 29, no. 4 (December 30, 2020): 399–408. Accessed November 24, 2024. https://srees.sggw.edu.pl/article/view/1878.