Barannik, E. A., O. S. Kostyreva, and A. I. Marusenko. “Nonlinear Effects Influence to Ultrasound Beams Spatial Distribution and Focusing”. Biophysical Bulletin 2, no. 23 (June 3, 2009): 106-113. Accessed April 12, 2025. https://periodicals.karazin.ua/biophysvisnyk/article/view/17002.