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2. Formal verification for solidity contracts. https://forum.ethereum.org/discussion/3779/formal-verification-for-solidity-contracts
3. Solidity hacks and vulnerabilities. https://hackernoon.com/hackpedia-16-solidity-hacks-vulnerabilities-their-fixes-and-real-world-examples-f3210eba5148
4. Ahrendt, W., Beckert, B., Bubel, R., Hähnle, R., Schmitt, P.H., Ulbrich, M.: Deductive software verification-the key book, vol. 10001. Springer, Cham (2016). https://doi.org/10.1007/978-3-319-49812-6
5. Lecture Notes in Computer Science;W Ahrendt,2019