1. Barka, T., Anderson, P. J.: In: Histochemistry. Theory, practice and bibliography, p. 240. New York: Hoeber Medical Division, Harper & Row Publishers, Inc. 1963.
2. Cameron, D. A.: The fine structure and function of bone cells, chap. 12 in: The biological basis of medicine (Bittar, E. E. and Bittar, N., eds.), vol. 3, p. 391–423. London-New York: Academic Press 1969.
3. Doty, S. B., Schofield, B. H., Robinson, R. A.: The electron microscopic identification of acid phosphatase and adenosinetriphosphatase in bone cells following parathyroid extract or thyrocalcitonin administration. In: Parathyroid hormone and thyrocalcitonin (Calcitonin). Proceedings of the Third Parathyroid Conference, p. 169–181. Montreal, October 1967.
4. Ericsson, J. L. E., Göthlin, G.: Preparation of calcified tissue for fine structural demonstration of acid phosphatase. J. Ultrastruct. Res. (1971) (in press).
5. Göthlin, G., Ericsson, J. L. E.: Electron microscopic studies of cytoplasmic filaments and fibers in different cell types of fracture callus in the rat. Virchows Arch. Abt. B6, 24–37 (1970).