1  Andrew Poelstra https://www.semanticscholar.org/paper/On-Stake-and-Consensus-Poelstra/5fc38a9b1301cd65604e67e1a424a1241f66cecf?p2df
2 Bitfury: https://bitfury.com/content/downloads/pos-vs-pow-1.0.2.pdf

3 Paul Sztorc's posts:
https://www.truthcoin.info/blog/pow-cheapest/
https://www.truthcoin.info/blog/pos-still-pointless/

4 In this post, the developer use math to prove Proof of stake is not possible and described to new type of attack to proof of stake blockchain that's cheap to implement
https://github.com/zack-bitcoin/amoveo-docs/blob/master//other_blockchains/proof_of_stake.md

This is the response from different team to above:
https://github.com/zack-bitcoin/amoveo-docs/blob/master/other_blockchains/the_defence_of_pos.md



Any more counterarguments?