1. A. P. Angelopoulos, 1966 . Histopathological, histochemical and quantitative studies of mast cells in hyperplasia gingivae diphenylhydantoinea. Ph. D. Dissertation , University of Oklahoma.
2. Studies of mast cells in the human gingiva.
3. The copper phthalocyanin dye ?Astrablau? and its staining properties, especially the staining of mast cells