1. N. P. Petrov, “Friction in Machines and the Effect of the Lubricant” Inzh. Zh. St. Peterb. (1883).
2. Hydrodynamic Lubrication theory, Ed. by L. S. Leibenzon (Gostekhizdat, Moscow, 1934) [in Russian].
3. L. G. Loitsyanskii, Mechanics of Liquids and Gases (Nauka, Moscow, 1970; Pergamon, Oxford, 1972).
4. W. A. Gross, Gas Film Lubrication (Wiley, New York, 1962).
5. V. N. Constantinescu, Gas Lubrication (Am. Soc. of Mech. Eng., New York, 1969; Mashgiz, Moscow, 1968).