1. G. Banik, J.G. Neevel: Tintenfrassschäden und ihre Behandlung ed. by Fohlhammer (Stuttgart 1999) pp. 13–24 and pp. 87–112
2. C. Remazeilles: Etude des processus de degradation des manuscripts anciens écrits à l’encre ferrogallique, PhD thesis (University of La Rochelle, France 2001)
3. C. Krekel: Tintenfrassschäden und ihre Behandlung, ed. by Fohlhammer (Stuttgart 1999) pp. 25–36
4. H. Kipton, J. Powell, M.C. Taylor: Aust. J. Chem. 35, 739 (1982)
5. M. Strlic, T. Radovic, J. Kolar, B. Pihlar: J. Agric. Food Chem. 50, 6313 (2002)