1. B.
Reissland
, in Visible progress of paper degradation caused by Iron Gall inks, ed. J. A. E. Brown, The Iron Gall Ink Meeting, University of Northumbria, Newcastle upon Tyne, 2000, pp. 67–72
2. G.
Banik
, Tintenfraßschäden und ihreBehandlung, Kohlhammer, Stuttgart, 1999, p. 13
3. J.
Kolar
and M.Strilic, Iron Gall Inks: on Manufacture, Characterisation, Degradation and Stabilisation, National and University Library, Ljubljana, 2006
4. O.
Posse
, HandschriftenKonservierungnach der St. GallenerKonferenz 1898 sowie der Dresdner Konferenz 1899, reprinted in Restaurator, 1969, 1, 51
5. S.
Zervos
, Natural and accelerated ageing of cellulose and paper: a literature review, in Cellulose: Structure and Properties, Derivatives and Industrial Uses, ed. A. Lejeune and T. Deprez, Biotechnology in Agriculture, Industry and Medicine, Nova Publishers, 2010