1. Cercek, L., Cercek, B.: Studies on the structuredness of cytoplasm and rates of enzymatic hydrolysis in growing yeast cells. I. Changes induced bv ionizing radiation. Int. J. Radiat. Biol.21, 445?453 (1972).
2. Cercek, L., Cercek, B.: Studies on the structuredness of cytoplasm and rates of enzymatic hydrolysis in growing yeast cells. II. Changes induced by ultra-violet light. Int. J. Radiat.22, 539?544 (1972).
3. Perrin, J.: La fluorescence des solutions. Ann. Phys.10, Serie XII, 169 (1929.
4. Rotman, B., Papermaster, B. W.: Membrane properties of living mammalian cells as studied by enzymatic hydrolysis of fluorogenic esters. Biochemistry55, 134?141 (1966).
5. Wickerham, L. J.: Taxonomy of yeasts. Tech. Bull. U.S. Dept. Agric. 1029 C (1951).