Kimura, S., Y. Yamasaki, T. Nishikawa, S. Kurihara, and H. Hatano. 1980. “A Comparative Study of Seborrheic Keratoses and Basal Cell Epitheliomas by Complement Immunofluorescence and Electron Microscopy”. Acta Dermato-Venereologica 60 (3):203-7. https://doi.org/10.2340/0001555560203207.