Xu, Daiguo; Xu, Shiliu; Wang, Yuxin: 'Improved self-blocking flip-flop design', Electronics Letters, 2016, 52, (14), p. 1207-1209, DOI: 10.1049/el.2016.0836
IET Digital Library, https://digital-library.theiet.org/;jsessionid=2q59cu3uf21kk.x-iet-live-01content/journals/10.1049/el.2016.0836