1. Blacklow, L. (2007). New Dimensions in Photo Processes: A Step-by-Step Manual in Alternative Photography, Focal.
2. Greenwald, R.B. (1977). 4-Hydropyrazole Developing Agents. (US4102684).
3. Bloom, S.M. (1981). Wayland, Boris Levy Image Receiving Elements. (US43048US430483535).
4. Short Guide to Film Base Photographic Materials: Identification, Care, and Duplication;Fischer;Northeast Doc. Conserv. Cent.,2007
5. Wilker, A. (2004). The Composition and Preservation of Instant Films, University of Texas at Austin.