VIKTOROV, P. V., A. R. ZHEZHERIN, and L. P. KONOVALOVA. “LiNbO3 Dispersive Filter With Fan-Shaped Transducers and Reflective Arrays”. Archives of Acoustics 16, no. 1 (March 31, 1991): 149–156. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/1218.