1. [1] “MakeLSI Project,” https://scrapbox.io/makelsi/
2. [2] R.T. Edwards, “Google/SkyWater and the promise of the open PDK,” Workshop on Open-Source EDA Technology, 4-pages, 2020.
3. [3] R.T. Edwards, M. Shalan, and M. Kassem, “Real silicon using open-source EDA,” IEEE Des. Test., vol.38, no.2, pp.38-44, 2021. 10.1109/mdat.2021.3050000
4. [4] ngspice-open source spice simulator, http://ngspice.sourceforge.net
5. [5] Synopsys, Liberty User Guide Volume 1.