1. Shakespeare, W., The Tragedy of Macbeth, in: Comedies, Histories and Tragedies: Published according to the True Originall Copies, London, laggard and Blount, 1623.
2. Systematized Nomenclature of Pathology, 1st ed., College of American Pathologists, Chicago, 1965.
3. Moog, F., and Wenger, E. L., The occurrence of a neutral mucopolysaccharide at sites of high alkaline phosphatase activity, Am. J. Anat., 90, 339, 1952.
4. Holt, S. J., and O’Sullivan, D. G., Studies in enzyme cytochemistry. 1. Principles of cytochemical staining methods, Proc. R. Soc. London Ser. B, 148, 465, 1958.
5. Suzuki, U., Yoshimura, K., and Takaishi, M., Über ein Enzym “Phytase” das “Anhydro-oxy- methylen-diphosphorsäure” spaltet, Bull. Coll. Agric. Tokyo Imp. Univ., 7, 503, 1907.