1. Michelson: the language of Smart Contracts in Tezos.
https://tezos.gitlab.io/whitedoc/michelson.html
2. Proof-of-stake in Tezos.
https://tezos.gitlab.io/whitedoc/proof_of_stake.html
3. Tezos code repository.
https://gitlab.com/tezos/tezos
4. An introduction to the zen protocol.
https://www.zenprotocol.com/files/zen_protocol_white_paper.pdf
(2017)
5. Ahman, D., et al.: Dijkstra monads for free. CoRR abs/1608.06499 (2016).
http://arxiv.org/abs/1608.06499