1. Morphogenesis of Skin;Sengel,1976
2. Epithelial-Mesenchymal Interactions;Fleischmajer,1968
3. Some thoughts on embryonic induction in relation to development;Wessels;J Invest Dermatol,1970
4. Intercellular communication during epidermal organ formation, Epidermal Wound Healing;Slavkin,1972