1. Leontovich, M.A.: ‘On the approximate boundary conditions for the electromagnetic field on the surface of well conducting bodies’, Vvedensky, B.A., Investigations of radio waves, (Acad. of Sciences of USSR in Russian), Moscow 1948), p. 5–12
2. The Impedance Concept and Its Application to Problems of Reflection, Refraction, Shielding and Power Absorption
3. Shchukin, A.N.: ‘Propagation of radio waves’, (Moscow Svyazizdat 1940), p. 48–56 in Russian
4. On the skin effect approximation