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+### contracts of interest
+
+<br>
+
+* [Uniswap v3](https://github.com/Uniswap/v3-core/tree/main/contracts)
+* [Chainlink](https://github.com/smartcontractkit/chainlink/tree/develop/contracts/src/v0.4)
+* [Fei protocol](https://github.com/fei-protocol/fei-protocol-core/tree/master/contracts)
+* [OpenZeppelin's ERC-20](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol)
+* [OpenZeppelin's ERC-721](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol)
+* [Immunefi notes on the ERC token standard](https://medium.com/immunefi/how-erc-standards-work-part-1-c9795803f459)
+* [Security contracts from OpenZeppelin](https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/security)
+* [Smart contracts attack vectors](https://github.com/kadenzipfel/smart-contract-attack-vectors)
+
+<br>