1. The influence of age upon the hexosamine–collagen ratio of dermal biopsies from men;Sobel;J. Geront,1958
2. Influence of age on connective tissue. Hexosamine and hydroxyproline in human aorta, myocardium, and skin;Clausen;Lab. Invest,1962
3. Influence of age on connective tissue. Uronic acid and uronic acid-hydroxyproline ratio in human aorta, myocardium, and skin;Clausen;Lab. Invest,1962
4. Influence of age on chondroitin sulfates and collagen of human aorta, myocardium and skin;Clausen;Lab. Invest,1963
5. Chemical analysis of the dermis in scleroderma;Fleischmajer;Proc. Soc. Exp. Biol. Med,1967