1. Barka, T., Anderson, P.J.: Histochemistry, Theory, practice and bibliography, p. 240. New York: Hoeber Medical Division, Harper and Row, Publisher, Inc. 1963
2. Blaschko, H., Comline, R.L., Schneider, F.H., Silver, M., Smith, A.D.: Secretion of a chromaffin granule protein, chromogranin, from the adrenal gland after splanchnic stimulation. Nature (Lond.) 215, 58?59 (1967)
3. Casselman, W.G.B.: Acetylated Sudan black B as a more specific histochemical reagent for lipides. Quart. J. micr. Sci. 95, 321?322 (1954)
4. Coupland, R.E.: The natural history of the chromaffin cell. London: Longmans 1965
5. Coupland, R.E., Hopwood, D.: The mechanism of the differential staining reaction for adrenaline and noradrenaline storing granules in tissues fixed in glutaraldehyde. J. Anat. (Lond.) 100, 227?243 (1966)