MUSÍLKOVÁ M., UJCOVÁ E., SEICHERT L., SIKYTA B., KRUMPHANZL V. (1982): A comparison of the effect of mutagens on a high citric acid producing strain of Aspergillus niger. Česká Mykologie 36(1): 47-51 (published: 1982) abstract Three mutagens were compared on Aspergillus niger NG 233. UV light gave the highest productivity increase (13%). Isolate UV 6 retained high activity after storage.
