S. K. Yoo, D. Karakoyunlu, B. Birand, and B. Sunar, Improving the Robustness of Ring Oscillator TRNGs, ACM Transactions on Reconfigurable Technology and Systems (TRETS), 2010.
DOI : 10.1145/1754386.1754390

V. Fischer, F. Bernard, N. Bochard, and M. Varchola, Enhancing Security of Ring Oscillator-based RNG implemented in FPGA, Field- Programable Logic and Applications (FPL), pp.245-250, 2008.
URL : https://hal.archives-ouvertes.fr/ujm-00350859

A. Winstanley and M. R. Greenstreet, Temporal Properties of Self-Timed Rings, Proceedings of the 11th Advanced Research Working Conference on Correct Hardware Design and Verification Methods, CHARM01, pp.140-154, 2001.
DOI : 10.1007/3-540-44798-9_12

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

I. E. Sutherland, Micropipelines, Communications of the ACM (Association of Computing Machinery), issue.6, pp.720-738, 1989.
DOI : 10.1145/1283920.1283946

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

B. Valtchanov, V. Fischer, and A. Aubert, Enhanced TRNG based on the coherent sampling, International Conference on Signals, Circuits and Systems (SCS), 2009.
URL : https://hal.archives-ouvertes.fr/ujm-00436108