Gupta, V. et al. 2024. Determination of the Age of Gel Pen Inks on Handwritten Documents using Gas Chromatography-Mass Spectrometry and Chemometrics. Journal of Forensic Document Examination. 32, 1 (Nov. 2024), 17–24. DOI:https://doi.org/10.31974/jfde32-17-24.