1. "[1] M.C. Ainsworth, Inks and Their Composition and Manufacture, Charles Griffin and Company Ltd, 1904.
2. [2] R. Brunelle, Forensic Examination of Ink and Paper, Charles C. Thomas Publisher Ltd, 1984.
3. [3] R. Brunelle, R. Crawford, Advances in the Forensic Analysis and Dating of Writing Ink, Charles C. Thomas Ltd, 2003.
4. [4] J. Connor-Linton, Writing, An Introduction to Language and Linguistics, (2nd ed.), by R.W. Fasold and J. Connor-Lintoln), Cambridge University Press, 2014.
5. [5] H.G.M. Edwards, Ancient Inks: A Forensic Art Historical Perspective, Encyklopedia of Scientific Dating Methods, (Editors: W. Rink and J. Thompson), Springer, Dordrecht, 2014. https://doi.org/10.1007/978-94-007-6326-5_210-3