ALEKSIEJUK, M., J. RAABE, and J. RANACHOWSKI. “Technology and Acoustical Properties of the Ceramic High-Temperature Superconductors”. Archives of Acoustics 16, no. 3-4 (May 1, 2014): 387–412. Accessed July 11, 2025. https://acoustics.ippt.pan.pl/index.php/aa/article/view/1238.