OShaughnessy T., 1995, A CMOS, self calibrating, 100MHz RC-oscillator for ASIC applications, Proc. IEEE ASIC Conf. and Exhibit, pp. 279-282

Sebastiano F., Breems L. J., Makinwa K. A. A., Drago S., Leenaerts D. M. W., Nauta B., 2009, A low-voltage mobility-based frequency reference for crystal-less ULP radios, IEEE J. Solid-State Circuits, Vol. 44, No. 7, pp. 2002-2009

Tokunaga Y., Sakiyama S., Matsumoto A., Dosho S., 2010, An on-chip CMOS relaxation oscillator with voltage averaging feedback, IEEE J. Solid-State Circuits, Vol. 45, No. 6, pp. 1150-1158

Lahiri A., Badrathwal P., Jain N., Chatterjee K., 2017, A 0.5V supply, 49nW band-gap reference and crystal oscillator in 40nm CMOS, 2017 IEEE Custom Integrated Circuits Conference (CICC), pp. 1-4

Hsuan Y., Liu S. I., 2013, A submicrowatt 1.1MHz CMOS relaxation oscillator with temperature compensation, IEEE J. Solid-State Circuits, Vol. 60, No. 12, pp. 837-841

Taha I., Mirhassani M., 2014, A temperature compensated relaxation oscillator for SoC implementations, 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS), pp. 373-376

Ivanov V., Brederlow R., Gerder J., 2012, An Ultra Low Power Bandgap Operational at Supply from 0.75V, IEEE J. Solid-State Circuits, Vol. 47, No. 7, pp. 1515-1532

Razavi B., 2000, Design of Analog CMOS Integrated Circuits, New Edition, Boston:McGraw-Hill

Hsiao K. J., 2014, A 1.89nW/0.15V Self-Charged XO for Real-Time Clock Generation, 2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), pp. 298-299

Jacob Baker R., 2010, CMOS: Circuit Design, Layout, and Simulation, 3rd Edition, Hoboken:John Wiley and Sons Ltd