1. “Injectable collagen for soft tissue augmentation,”;Knapp;Plastic & Reconstructive Surgery,1977
2. “Injectable collagen implantupdate,”;Castrow;Journal of the American Academy of Dermatology,1984
3. “A comparative histologic study of the effects of 3 peeling agents and dermabrasion on normal and sun-damaged skin,”;Stegman;Aesthetic Plastic Surgery,1982
4. “Use of Zyderm in the aging face,”;Nicolle;Aesthetic Plastic Surgery,1982
5. Castrow, “Injectable collagen implant-update.”