References
- , American National Standards Institute (ANSI) Standard PH 1.53–1984. Standard PH4.21–1979 (under revision)
- Codings T. J., Young F. J. Improvements in some tests and techniques in photographic conservation. Studies in Conservation 1976; 21: 79–84
- Kodak. Conservation of Photographs. 1985, Publication No. F-40 (Revised Edition)