1. V. I. Blokh, “Functions of stresses in the theory of elasticity,” Prikl. Mat. Mekh., 14, No. 4, 415–422 (1950).
2. N. M. Borodachev, "Three-dimensional elasticity-theory problem in terms of the stress," Prikl. Mekh., 31, No. 12, 38-44 (1995); English translation
3. : J. Appl. Mech., 31, No. 12, 991-996 (1995).
4. L. D. Velichko, Optimal Control (in a Sense of Speed) of the Process of Heating of a Body under Restrictions Imposed on Control and Viscoelastic Stresses [in Russian], Author’s Abstract of the Candidate-Degree Thesis (Physics and Mathematics), Lvov (1986).
5. A. F. Verlan’ and V. S. Sizikov, Integral Equations: Methods, Algorithms, and Programs [in Russian], Naukova Dumka, Kiev (1986).