* Roger of Tor Project wrote a blog post on this topic: https://blog.torproject.org/one-cell-enough-break-tors-anonymity
* The Traffic Analysis of Continuous-Time Mixes by George Danezis https://www.freehaven.net/anonbib/cache/danezis:pet2004.pdf
* Approximating a Global Passive Adversary Against Tor by Chakravarty, Sambuddho; Stavrou, Angelos; Keromytis, Angelos D. https://academiccommons.columbia.edu/doi/10.7916/D82J6QBM
* How Much Anonymity does Network Latency Leak? by NICHOLAS HOPPER EUGENE Y. VASSERMAN ERIC CHAN-TIN https://www.freehaven.net/anonbib/cache/tissec-latency-leak.pdf
* Analyzing the Effectiveness of Passive Correlation Attacks on the Tor Anonymity Network by Sam DeFabbia-Kane https://pdfs.semanticscholar.org/17a6/736b5b8d9a2e516adbebb338e3265681b1c9.pdf
* DeepCorr: Strong Flow Correlation Attacks on Tor Using Deep Learning https://arxiv.org/pdf/1808.07285.pdf