„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 48, no. 4 (Dezember 15, 2025): 16–21. Zugegriffen November 2, 2026. https://ojs.ugal.ro/index.php/mms/article/view/9527.