Husein, I.R., Shiddiq, M., Sari, D.L. and Putri, A. 2022. Wavelength dependence of optical electronic nose for ripeness detection of oil palm fresh fruits. Science, Technology, and Communication Journal. 2, 3 (Jun. 2022), 79-86. DOI:https://doi.org/10.59190/stc.v2i3.212.