1. I. S. Gradshtein and I. M. Ryzhik, Tables of Integrals, Sums, Series, and Products [in Russian], Nauka, Moscow (1971).
2. W. Koppenfels and F. Stallmann, Praxis der konformen Abbildung [Russian translation], IL, Moscow (1963).
3. V. V. Golubev, Lectures on the Analytical Theory of Differential Equations [in Russian], Gostekhizdat, Moscow–Leningrad (1950).
4. L. I. Sedov, Plane Problems of Hydrodynamics and Aerodynamics [in Russian], Nauka, Moscow (1980).
5. G. Birkhoff and E. Sarantonello, Jets, Wakes, and Caverns [Russian translation], Mir, Moscow (1964).