1. Benassi, G., and G. Prodi: Determination of total hexosamine in tissues. Research on the subcutaneous connectivum and on the derma of normal white rats. G. Biochim. 2, 424–433 (1953); zit. nach Chem. Abstr. 49, 13351/f (1955).
2. Bowes, J. H., and R. H. Kenten: The amino acid composition and titration curve of collagen. Biochem. J. 43, 358–365 (1948).
3. Caccialanza, P., and M. Bonelli: Mucoprotein of serum in various dermatoses. G. ital. Derm. Sif. 95, 478–481 (1954); zit. nach Chem. Abstr. 49, 15029/c (1955).
4. Eisele, C. W., and L. Eichelberger: Water, electrolyte and nitrogen content of human skin. Proc. Soc. exp. Biol. (N. Y.) 58, 97–100 (1945).
5. Flesch, P.: The role of copper in mammalian pigmentation. Proc. Soc. exp. Biol. (N. Y.) 70, 79–83 (1949).