Koshiba, M.; Hayata, K.; Suzuki, M.: 'Erratum: Finite-element analysis of flat overlay waveguides for acoustic surface waves using acoustic surface impedance', Electronics Letters, 1982, 18, (21), p. 936-936, DOI: 10.1049/el:19820640
IET Digital Library, https://digital-library.theiet.org/;jsessionid=em6i1redpsr8r.x-iet-live-01content/journals/10.1049/el_19820640