The prophets and apostles write. Images and the medieval understanding of writing.

von Rosenfeld, R.
Veröffentlicht in Scripta Mediterranea. Bulletin of the Society for Mediterranean Studies, Toronto, 12.1991-92
1991-92.
Umfang/Format: 53-95, Abb.

A rare medieval burnishing tooth in the Museum of Writing, London.

von Cole, Alan E.
Veröffentlicht in The Antiquaries Journal, 86 (2006)
2006.
Umfang/Format: 356-372 : Abb.