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An implementation of the Yarrow PRNG for FreeBSD (2002) - Murray.pdf.gz

Analysis of the Linux Random Number Generator (2006) - Gutterman, Pinkas, Reinman.pdf.gz

HAVEGE A User-Level Software Heuristic for Generating Empirically Strong Random Numbers (2003) - Irisa-Inria, Inria.pdf.gz

How to Eat Your Entropy and Have it Too — Optimal Recovery Strategies for Compromised RNGs (2014) - Shamir et. al.pdf.gz

Yarrow-160 Notes on the Design and Analysis of the Yarrow Cryptographic Pseudorandom Number Generator (1999) - Schneier et. al.pdf.gz