1. Ainsworth, S. K., Ito, S., Karnovsky, M. J.: Alkaline bismuth reagent for high resolution ultrastructural demonstration of periodate reactive sites. J. Histochem. Cytochem. 20, 995?1005 (1972)
2. Barka, T., Anderson, P. J.: Histochemistry. Theory, practice and bibliography, p. 68?95, and p. 139. New York-Evanston-London: Hoeber Med. Div. Harper & Row, Publ. Inc. 1963
3. Bradbury, S., Stoward, P. J.: The specific cytochemical demonstration in the electron microscope of periodate-reactive mucosubstances and polysaccharides containing vicglycol groups. Histochemie 11, 71?80 (1967)
4. Csuka, O., Sugár, J.: Electron microscopic studies on the specificity of the PA-silver reaction. Acta Morph. Acad. Sci. Hung. 19, 233?240 (1971)
5. Deák, Gy., Karlinger, K.: Submicroscopic structure of the corpora amylacea of the central nervous system. Acta morph. Acad. Sci. hung. 20, 77?84 (1972)