1. Wool – Nature’s Wonder Fibre;Leeder,1984
2. Photo-yellowing of wool. Part 1: Factors affecting photo-yellowing and experimental techniques;Millington;Coloration Technology,2006
3. Photo-yellowing of wool. Part 2: Photo-yellowing mechanisms and methods of prevention;Millington;Coloration Technology,2006
4. The dyeing of wool with pre-metallised dyes;Lewis;Wool Science Review,1977
5. Dyeing wool with metal-complex dyes;Burkinshaw,1992