1. A. M. Enyakov, Medits. Tekhn., No. 3, 20 (2001).
2. A. S. Khimunin, in Proceedings of III Session of the Russian Acoustical Society (AKIN, Moscow, 1994), pp. 3–4 [in Russian].
3. International Electrotechnical Commission (IEC), TC 87: Ultrasonics. Overview Update. British Electrotechn. Committee Brit. Stand. Inst., 2002, pp. 1–9.
4. IEC Standard 61102: Measurements and Characterization of Ultrasonic Fields Using Hydrophones in Frequency Range 0.5 to 15 MHz (1991).
5. IEC Standard 866: Characteristics and Calibration of Hydrophones for Operation in Frequency Range 0.5 to 15 MHz (1987).