1. Janícek G., Hrdlicka J.: The simple colorimetric determination of reducing sugars. (In Czech)Listy cukrovarnické 70, 27 (1954).
2. Kinoshita S.: The production of amino acids by fermentation processes, p. 201,in W. W. Umbreit (Ed.):Advances in Applied Microbiology, Vol. I, Academic Press, New York, 1959.
3. Mandal S. K., Majumdar S. K.: Effect of carbon and nitrogen sources on the production of valine byAerobacter aergenes.J. Food Sci. Technol. 8, 75 (1971).
4. Musílková M., Necásek J., Plachý J., Lokvenc F., Cerkes L.: Isolation of glutamate — producing bacterial strain,Folia Microbiol. 11, 301 (1966).
5. Nakayama K., Kitada S., Kinoshita S.: L-Valine production using microbial auxotroph.J. Gen. Appl. Microbiol. 7, 52 (1961).