1. The Chemistry and Biology of Yeasts (Academic, New York, 1958) p. 535.
2. and Mac Cance and Widdowson's. The Composition of Foods, 4th ed. (Elsevier/North Holland, Amsterdam, 1978) p. 317.
3. and Pearson's Chemical Analysis of Foods, 8th ed. (Churchill Livingstone, Edinburgh, 1981), p. 150.
4. Der Einfluß von Kobalt auf die Vermehrung von Saccharomyces cerevisiae