imam akbar imam, M. R. H. Rizky, D. Rawani, R. M. Veranika, H. Al-Faritzie, and R. ., “THE EFFECT OF DIFFERENT STRUCTURE AND GRADIENT INFILL ON MECHANICAL BEHAVIOR POLYLACTIDE ACID MATERIALS (PLA)”, AUS, vol. 15, no. 1, pp. 49–54, May 2023.