http://7fa6xlti73nrpxl6cykao4wp7g3bg4624ghrtdomlvkeivvwclv2iyad.onion/anonbib/cache/jakobsson-optimally.html
This hybrid mix network is capable of natural processing of arbitrarily long input elements, and is fast in both practical and asymptotic senses. While the overhead in the size of input elements is linear in the number of mix servers, it is quite small in practice.