1. Fiber tipped pens;Black;Journal of Criminal Law and Criminology,1967
2. Identifying ball pens by the burr striations;Black;Journal of Criminal Law, Criminology and Police Science,1970
3. The identification of handwriting on a convex surface;Brown,1985
4. A study on the influence of wearing a glove on handwriting by Chinese in Hong Kong;Cheng;Journal of the American Society of Questioned Document Examiners,2007
5. Evidential documents;Conway,1959