L. P. Il'ina, “Estimates for the coefficients of univalent functions in terms of the second coefficient”, Mat. Zametki, 13:3 (1973), 351–357; Math. Notes, 13:3 (1973), 215–218
1968
2.
L. P. Il'ina, “On the mutual growth of neighboring coefficients of univalent functions”, Mat. Zametki, 4:6 (1968), 715–722; Math. Notes, 4:6 (1968), 918–922