Conference ProceedingsCharacteristics of Gel Pen Inks by Microscopy and VOCs Using HS-SPME GC/MSPresenting section:Questioned Documents2011Kim, Chang-Seong, Deajeon SOUTH KOREA; Choi, Mi-Jung, Daejeon 0 SOUTH KOREA; Sun, Yale Shik, Gimpo SOUTH KOREA; Park, Sung-Woo, Daejeon SOUTH KOREAView the paperQuestioned Documents