add readme link

Author: Arvolear

README.md

@@ -12,7 +12,7 @@ Solidity modules and utilities that **go far beyond mediocre solidity**.
 - Implementation of the [**Contracts Registry**](https://eips.ethereum.org/EIPS/eip-6224) pattern
 - State-of-the-art cryptography primitives (**ECDSA over 256-bit and 384-bit curves**, **RSASSA-PSS**)
 - Advanced data structures (**Vector**, **DynamicSet**, **PriorityQueue**, **AVLTree**)
-- ZK-friendly **Cartesian Merkle Tree**, [**Sparse Merkle Tree**](https://docs.iden3.io/publications/pdfs/Merkle-Tree.pdf), and [**Incremental Merkle Tree**](https://github.com/runtimeverification/deposit-contract-verification/blob/master/deposit-contract-verification.pdf) implementations
+- ZK-friendly [**Cartesian Merkle Tree**](https://medium.com/@Arvolear/cartesian-merkle-tree-the-new-breed-a30b005ecf27), [**Sparse Merkle Tree**](https://docs.iden3.io/publications/pdfs/Merkle-Tree.pdf), and [**Incremental Merkle Tree**](https://github.com/runtimeverification/deposit-contract-verification/blob/master/deposit-contract-verification.pdf) implementations
 - Versatile access control smart contracts (**Merkle whitelists**, **RBAC**)
 - Enhanced and simplified [**Diamond**](https://eips.ethereum.org/EIPS/eip-2535) pattern
 - Flexible finance instruments (**Staking**, **Vesting**)

contracts/libs/data-structures/CartesianMerkleTree.sol

@@ -7,7 +7,7 @@ pragma solidity ^0.8.4;
  * A magnificent ZK-friendly data structure based on a Binary Search Tree + Heap + Merkle Tree. Short names: CMT, Treaple.
  * Possesses deterministic and idemponent properties. Can be used as a substitute for a Sparse Merkle Tree (SMT).
  *
- * Gas usage for adding and removing 5,000 elements to a CMT with the keccak256 and poseidon hash functions is detailed below:
+ * Gas usage for adding and removing 1,000 elements to a CMT with the keccak256 and poseidon hash functions is detailed below:
  *
  * Keccak256:
  * - CMT.add - 249k