1. Angelkort, B.: Thrombozytenfunktion, plasmatische Blutgerinnung und Fibrinolyse bei chronisch arterieller Verschluürankheit. Med. Welt
30, 1239 (1979).
2. Baumann, J. C., Muth, H. W.: Vasoactive therapy with 1-(5-oxohexyl)-3,7-dimethyl xanthine in arterial circulatory disorders. Med. Welt
22, 1288 (1971).
3. Bryce, T. A. and Burrows, J. L.: Determination of oxpentifylline and a metabolite, 1-(5′-hydroxyhexyl)-3,7-dimethylxanthine, by gas-liquid chromatography using a nitrogen-selective detector. J. Chromatogr.
181, 355–361 (1980).
4. Cohen, G. M., Flockhart, I. R.: The partial purification and properties of a human erythrocyte 4-nitroacetophenone reductase. Xenobiotica
5. 213–222 (1975).
5. Dixon, W. J., Massey, F. J.: In “Introduction to statistical analysis”, McGraw-Hill, New York, pp 150–187 (1969).