1. F. Zafari, A. Gkelias, and K. K. Leung, arXiv: 1709.01015v3 (1709).
2. A. Alarifi, A. Al-Salman, M. Alsaleh, A. Alnafessah, S. Al-Hadhrami, M. A. Al-Ammar, and H. S. Al-Kha-lifa, Sensors 16, 707 (2016).
3. A. S. Dmitriev, E. V. Efremova, A. I. Panas, and N. A. Maksimov, Generation of Chaos (Tekhnosfera, Moscow, 2012) [in Russian].
4. A. S. Dmitriev and E. V. Efremova, Tech. Phys. Lett. 42, 42 (2016).
5. Yu. V. Andreev, A. S. Dmitriev, and V. A. Lazarev, in Proceedings of the 5th All-Russia Armand’s Readings, Murom,
2015, p. 211.