1. E. K. Ashkenazi, I. P. Boksberg, G. M. Rubinshtein, and K. K. Turoverov, Anisotropy of Mechanical Properties of Timber and Plywood [in Russian], Goslesbumizdat, 1958.
2. I. I. Gol'denblat, Lectures on Tensor Calculus and its Applications in Mechanics [in Russian], Moscow, 1958.
3. V. A. Bazhenov, Piezoelectric Properties of Wood [in Russian], Ch. 5, § 2, Izd-vo AN SSSR, 1959.
4. E. K. Ashkenazi, Anisotropy of Mechanical Properties of Some Glass-Reinforced Plastics [in Russian], Izd. Leningr. doma nauchn. -tekhn. prop., 1961.
5. E. K. Ashkenazi, Plast. massy, 2, 1964.