TAN, Wei Jim; ARIFF, Zulkifli Mohamad; RUSLI, Arjulizan; MUSA, Muhamad Sharan. A Modular, 3D-Printed, and Cost-Effective Near-Infrared Spectrometer with Machine Learning for Commodity Plastic Identification. IIUM Engineering Journal, [S. l.], v. 27, n. 3, p. 403–415, 2026. DOI: 10.31436/iiumej.v27i3.4388. Disponível em: https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/4388. Acesso em: 13 sep. 2026.