NAM, YUN SIK LEE, KI SOO PARK, HYUN MEE LEE, KANG BONG 2024-01-12T22:05:33Z 2024-01-12T22:05:33Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/97878 English micro-ATR FTIR ballpoint pen sinature intersection line questioned documents Judgment of signature made with ballpoint pen ink on illegal and counterfeit documents using Micro-Attenuated Total Reflectance FTIR spectroscopy Conference 2 대한화학회 대한화학회 KO