1. Akerblom, E.: Zur Histaminbestimmung in Gewebsextrakten. Acta physiol. scand. 2, 378 (1941).
2. Andrews, A. C., and T. D. Lyons: Quantitative determination of histamine in presence of certain interfering metallic ions. Anal. Chem. 29, 1325 (1957).
3. Baraud, J., L. Genevois, G. Mandillon and G. Ringenbach: Determination of histamine in blood during poisoning. C. R. Acad. Sci. (Paris) 222, 760 (1946); Chem. Abstr. 40, 4099 (1946).
4. Bessey, O. A., O. H. Lowry, M. J. Brock and J. L. LoPez: The determination of vitamin A and carotene in small quantities of blood serum. J. biol. Chem. 166, 177 (1946).
5. Bessey, O. A., A method for the rapid determination of alkaline phosphatase with five cubic millimeters of serum. J. biol. Chem. 164, 321 (1946).