Karunakaran, S., et al. “Exploration of Power Delay Product [PDP] on Feedback Based Dual Edge Triggered Flip Flop Utilizing Dual Sleep and Dual Slack Approach”. International Journal of Engineering & Technology, vol. 7, no. 4, Sept. 2018, pp. 3388-91, https://doi.org/10.14419/ijet.v7i4.21681.