https://doi.org/10.1049/el.2017.2916
7. Nagy L, Stopjakova V, Arbet D, Potocny M, Kovac M. An ultra low-voltage rail-to-rail comparator for on-chip energy harvesters. AEU-International Journal of Electronics and Communications. 2019;108:10-8. https://doi.org/10.1016/j.aeue.2019.05.040
8. Aiello O, Crovetti P, Toledo P, Alioto M. Rail-to-rail dynamic voltage comparator scalable down to pw-range power and 0.15-v supply. IEEE Transactions on Circuits and Systems II: Express Briefs.2021.