1. Recommendations for International Action to avert the Impending Protein Crisis, U.N. Report 67/13072 (1967)
2. World Food Situation in Mid-October 1974, U.N. Document E/CONF: 65/11 (1974); PAG Bull.4, 39 (1974)
3. Champagnat, A., Adrian, J.: Petrole et proteines. Paris: Doin 1974; Präve, P.: Umschau75, 397 (1975)
4. Littlehailes, J.D.: 1. Symp. Mikrobielle Proteingewinnung, S. 43. Weinheim: Verlag Chemie 1975
5. PAG Bull.3 (4), 2 (1973)