NAM, YUN SIK LEE, KANG BONG 2024-01-12T19:36:53Z 2024-01-12T19:36:53Z 2021-09-29 1225-004X https://pubs.kist.re.kr/handle/201004/95174 English 대한화학회 forensic science ball point pen ATR-FTIR questioned document Application of judgment with ATR FTIR in differentiation of forgery document Conference 2 화학세계 화학세계 KO