RAKESH JAIN 2, Y. S. Improve performance of johnson counter by reduce number of transistors of d flip flop. International Journal of Engineering Technology and Computer Research, [S. l.], v. 4, n. 2, 2016. Disponível em: https://ijetcr.org/index.php/ijetcr/article/view/310. Acesso em: 4 aug. 2026.