1. Systematic application of specialised photographic techniques;Von Breman;J. Crim. Law Criminol. Police Sci.,1967
2. A comparative analysis of dichroic filter viewing, reflected infrared and infrared luminescence applied to ink differentiation problems;Dick;J. Forensic Sci.,1970
3. Ink differentiation with infrared techniques;Chowdhry;J. Forensic Sci.,1973
4. The examination of inks on documents;Fryd;Med. Sci. Law,1974
5. Infrared luminescence using glass filters;Hoover;J. Forensic Sci.,1964