New Paper: An experimental study on distinguishing gel pen ink stains using desorption electrospray ionisation mass spectroscopy combined with the K-means algorithm https://t.co/nDX8pKuzyr
New Paper: Determination of the Age of Gel Pen Inks on Handwritten Documents using Gas Chromatography-Mass Spectrometry and Chemometrics https://t.co/E0Mwyzd18r
New Paper: Determining the sequence of intersecting lines formed by laser printer toner and seal ink based on confocal Raman spectroscopy https://t.co/ZldZ0zMfgY