1. Andreas M. Antonopoulos. 2014. Mastering Bitcoin: unlocking digital cryptocurrencies (1st. ed.). O'Reilly Media Inc. Andreas M. Antonopoulos. 2014. Mastering Bitcoin: unlocking digital cryptocurrencies (1st. ed.). O'Reilly Media Inc.
2. Robert Riemann and Stéphane Grumbach. 2017. Distributed Protocols at the Rescue for Trustworthy Online Voting. ArXiv preprint 1705.04480 (2017). Robert Riemann and Stéphane Grumbach. 2017. Distributed Protocols at the Rescue for Trustworthy Online Voting. ArXiv preprint 1705.04480 (2017).
3. Untraceable electronic mail, return addresses, and digital pseudonyms