A. M. Khan, M. T. Khan, M. Faisal, S. Tahir, G. Mustafa, and Kalbeabbas. “3D Printing Using Fused Filament Fabrication”. KIET Journal of Computing and Information Sciences, vol. 3, no. 1, Jan. 2020, p. 11, doi:10.51153/kjcis.v3i1.34.