1. Photographic Gelatine;Koepff,1985
2. The Chemistry and Technology of Gelatine and Glue;Bogue,1922
3. Glue and Gelatine;Smith,1929
4. Studies on the Structure of Collagen Utilizing a Collagenolytic Enzyme from Tadpole*
5. Intramolecular cross-link of chick skin collagen