Jen, C.K.; Oliveira, J.E.B.; Goto, N.; Abe, K.: 'Role of guided acoustic wave properties in single-mode optical fibre design', Electronics Letters, 1988, 24, (23), p. 1419-1420, DOI: 10.1049/el:19880969
IET Digital Library, https://digital-library.theiet.org/;jsessionid=10tfb83gbqump.x-iet-live-01content/journals/10.1049/el_19880969