The potential of artificial aging for modelling of natural aging processes of ballpoint ink
Identification and dating of the fountain pen ink entries on documents by ion-pairing high-performance liquid chromatography
Xiang-Feng Wang, Jing Yu, Meng-Xia Xie, Ya-Tong Yao, Jie Han
Are expert penmen better than lay people at producing simulations of a model signature?
Tahnee Dewhurst, Bryan Found, Doug Rogers