1. M. I. Vishik and L. A. Lyusternik, ?Asymptotic behavior of solutions of linear differential equations with large or rapidly varying coefficients and boundary conditions,? Uspekhi matem. nauk, vol. 15, no. 4, 94, 1960.
2. P. E. D'yachenko, V. E. Vainshtein, and B. S. Rozenbaum, Quantitative Assessment of Unevenness for Machined Surfaces [in Russian], Izd-vo AN SSSR, Moscow, 1952.
3. V. A. Pal'mov, ?An elastic plane with a hole of random shape,? Trudy Leningr. politekhn. in-ta, no. 235, 1964.
4. S. Rice, Theory of Fluctuating Noise, Theory of Transmitting Electrical Signals in the Presence of Noise [Russian translation], IL, Moscow, 1953.
5. A. A. Sveshnikov, Applied Methods of the Theory of Random Functions [in Russian], Sudpromgiz, Leningrad, 1961.