Alhamed, Abdulrahman, et al. “Support-Free Fused Deposition Modelling Printing for Overhangs Structure”. Mekatronika: Journal of Intelligent Manufacturing and Mechatronics, vol. 4, no. 2, Nov. 2022, pp. 64-71, https://doi.org/10.15282/mekatronika.v4i2.8945.