Automatically merged updates to draft EIP(s) 1108 (ethereum#2177)

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 - It only modifies existing Draft or Last Call EIP(s)
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EIPS/eip-1108.md

@@ -131,6 +131,9 @@ Both the Parity and Geth clients have already implemented cryptographic librarie
 * [MCL, a portable C++ pairing library](https://github.com/herumi/mcl)  
 * [Libff, a C++ pairing library used in many zk-SNARK libraries](https://github.com/scipr-lab/libff)
 
+## Additional References
+
+@vbuterin independently proposed a similar reduction after this EIP was originally created, with similar rationale, as [ethereum/EIPs#1187](https://github.com/ethereum/EIPs/issues/1187).
 
 ## Copyright
 Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).