MarchenkoV. O., MitropolskiyY. A., PogorelovA. V., SamoilenkoA. M., SkrypnikI. V., and KhruslovE. Y., “Naum Il’ich Akhiezer (on his 100-th birthday)”, Ukr. Mat. Zhurn., vol. 53, no. 3, pp. 291-293, Mar. 2001.