L. Sun, T. Kwasniewski, and K. Iniewski, A quadrature output voltage controlled ring oscillator based on three-stage subfeedback loops, Proc. Int. Symp. Circuits and Systems, pp.176-179, 1999.

D. Jeong, S. Chai, W. Song, and G. Cho, CMOS currentcontrolled oscillators using multiple-feedback loop architectures, IEEE ISSCC, pp.491-493, 1997.

S. Lee, B. Kim, and K. Lee, A novel high-speed ring oscillator for multiphase clock generation using negative skewed-delay scheme, IEEE J. Solid-State Circuits, pp.289-292, 1997.

J. Hamon, L. Fesquet, B. Miscopein, and M. Renaudin, High-Level Time-Accurate Model for the Design of Self-Timed Ring Oscillators, 2008 14th IEEE International Symposium on Asynchronous Circuits and Systems, pp.29-38, 2008.
DOI : 10.1109/ASYNC.2008.16

URL : https://hal.archives-ouvertes.fr/hal-00288379

O. Elissati, E. Yahya, S. Rieubon, and L. Fesquet, A Novel Highspeed Multi-phase Oscillator using self-timed Rings, the International conference of Microelectronics, ICM 2010, pp.204-207, 2010.

A. Cherkaoui, V. Fischer, A. Aubert, and L. Fesquet, A Self-Timed Ring Based True Random Number Generator, 2013 IEEE 19th International Symposium on Asynchronous Circuits and Systems, pp.99-106, 2013.
DOI : 10.1109/ASYNC.2013.15

URL : https://hal.archives-ouvertes.fr/ujm-00840593

S. Fairbanks and S. Moore, Analog micropipeline rings for high precision timing, 10th International Symposium on Asynchronous Circuits and Systems, 2004. Proceedings., pp.41-50, 2004.
DOI : 10.1109/ASYNC.2004.1299286

I. E. Sutherland, Micropipelines, Communications of the ACM, vol.6, pp.32-720, 1989.
DOI : 10.1145/1283920.1283946

E. Yahya, O. Elissati, H. Zakaria, L. Fesquet, and M. Renaudin, Programmable/Stoppable Oscillator Based on Self-Timed Rings, 2009 15th IEEE Symposium on Asynchronous Circuits and Systems, pp.3-12, 1920.
DOI : 10.1109/ASYNC.2009.12

URL : https://hal.archives-ouvertes.fr/hal-00417834

A. Cherkaoui, V. Fischer, A. Aubert, and L. Fesquet, Comparison of Self-Timed Ring and Inverter Ring Oscillators as entropy sources in FPGAs, 2012 Design, Automation & Test in Europe Conference & Exhibition (DATE), pp.1325-1330, 2012.
DOI : 10.1109/DATE.2012.6176697

URL : https://hal.archives-ouvertes.fr/ujm-00667639

J. C. Ebergen, S. Fairbanks, and I. E. Sutherland, Predicting performance of micropipelines using Charlie diagrams, Proceedings Fourth International Symposium on Advanced Research in Asynchronous Circuits and Systems, pp.238-246, 1998.
DOI : 10.1109/ASYNC.1998.666509

D. B. Leeson, A simple model of feedback oscillator noise spectrum, Proc. IEEE, pp.329-330, 1966.
DOI : 10.1109/PROC.1966.4682

B. Razavi, A Study of Phase Noise in CMOS Oscillators, IEEE J. Solid- State Circuits, vol.31, issue.3, 1996.