S. A. ZABUZOW, L. P. KONOVALOVA, and U. G. SMIRNOV, “SAW filters with fan-shaped transducers”, Arch. Acoust., vol. 16, no. 1, pp. 161–165, Mar. 1991, Accessed: Feb. 25, 2026. [Online]. Available: https://acoustics.ippt.pan.pl/index.php/aa/article/view/1221