1. The American Phytopathological Society, Commitee on Standardisation of fungicidal tests. The slide-germination method of evaluating protectant fungicides. Phytopathology 33, 627?632 (1943).
2. Boffi, V., A. Lucarelli and E. Bucci: Influenza dei tamponi e di alcuni sali inorganici sulla attivita enzimatica della carboxilasi resintetizzata del lievito. Ricera Sci. 27, (9) 2692?2700; ref. in Biol. Abstr. 32, (7) 2078 (1957).
3. Charlet, E.: Über den chemischen und mikrochemischen Nachweis des Schwefels in Schwefelmikroben. Zbl. Bakt., II. Abt. 107, 169 (1954).
4. Doran, W. L.: Laboratory studies of the toxicity of some sulphur fungicides. New Hampshire Agr. Exp. Sta. Tech. Bull. 19, 1?11. (1922); zit. bei Horsfall 1956.
5. Feichtmeir, E. F.: The effect of particle size and solubility of sulphur in carbon disulfid upon its toxicity to fungi. Phytopathology 39, 605?615 (1949).