Girnyk, S. A., BarannikE. А., V. V. Tovstiak, D. A. Tolstoluzhskiy, and V. V. Podzolkova. “Study of Soft Tissues Viscoelastic Properties Using Acoustic Palpation Method”. Biophysical Bulletin, Vol. 2, no. 19, June 2007, pp. 98-104, https://periodicals.karazin.ua/biophysvisnyk/article/view/17247.