1. A. Yu. Ishlinskii, Prikl. Mat. Mekh. 8, 201 (1944).
2. V. V. Lavrov, Dokl. Akad. Nauk SSSR 162, 54 (1965) [Sov. Phys. Dokl. 10, 429 (1965)].
3. D. M. Cole and L. D. Gould, Cold Reg. Sci. Tecnol. 18, 295 (1990).
4. I. Yu. Voronina and V. P. Epifanov, Izv. Akad. Nauk SSSR, Mekh. Tverd. Tela, No. 5, 184 (1983).
5. V. P. Epifanov, USSR Inventor’s Certificate No. 1518712 G01, Byull. Izobret., No. 40 (1989).