M. ALEKSIEJUK, J. RAABE, and J. RANACHOWSKI, “Technology and acoustical properties of the ceramic high-temperature superconductors”, Arch. Acoust., vol. 16, no. 3-4, pp. 387–412, May 2014, Accessed: Jun. 10, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1238