1. Barka, T., Anderson, P. J.: Histochemistry, theory, practice, and bibliography, p. 222. New York: Harper & Row 1963
2. Bourne, G. H.: Histochemical demonstration of phosphatases in the central nervous system of the rat. Exp. Cell Res. [Suppl.]5, 101?117 (1958)
3. Burstone, M. S.: Histochemical comparison of naphthol AS-phosphates for the demonstration of phosphatases. J. Natl. Cancer Inst.20, 601?616 (1958)
4. Freiman, D. G.: Organic chelating agent in the demineralization of bone for histochemical study of alkaline phosphatase. Am. J. Clin. Pathol.24, 227?235 (1954)
5. Giacometti, L., Machida, H.: Alkaline phosphatase activity in the sensory nerve endings of the clitoris. Arch. Dermatol.91, 377?378 (1965)