« Design and Development of a Modular 3D-Printed Extruder for Recycled PET Filament Production ». The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, vol. 48, nᵒ 4, décembre 2025, p. 16-21, https://doi.org/10.35219/mms.2025.4.03.