Moulika Devi Vankala, & G.P.S Prasanthi. (2016). Analog and Digital PLL with Single Ended Ring VCO for “Full Swing Symmetrical Even Phase Outputs”. International Journal of Computer Engineering in Research Trends, 3(8), 441–446. Retrieved from https://www.ijcert.org/index.php/ijcert/article/view/782