1. Methods of creating, testing and identifying traditional black Persian inks, Restaurator;Zekrgoo;Restaurator,2014
2. A. Stijnman, Iron Gall inks: On manufacture, characterisation, Degradation and Stabilisation, in: J. Kolar, M. Strlic (Eds.), National and University Library, 2006, pp. 4–20.
3. The Broad spectrum: Studies in the materials, techniques, and Conservation of Color On Paper;Stratis,2002
4. Investigation of oxidation and migration processes of inorganic compounds in ink-corroded manuscripts;Kanngießer;SpectrochimicaActa Part B: Atomic Spectrosc.,2004
5. The chemistry of historical iron gall inks;Krekel;Int. J. Forensic Doc. Exam.,1999