van Etten, W.: 'Reply: Crosstalkless termination of multiwire cables', Electronics Letters, 1978, 14, (8), p. 251-252, DOI: 10.1049/el:19780171
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1r6kdukugu2tj.x-iet-live-01content/journals/10.1049/el_19780171