Ran Canetti and Marc Fischlin; Universally Composable Commitments; Cryptology ePrint Archive: Report 2001/055 (link) http://eprint.iacr.org/2001/055
Marc Fischlin, Roger Fischlin: Efficient Non-malleable Commitment Schemes. CRYPTO 2000: 413–431 (link) https://link.springer.com/article/10.1007/s00145-009-9045-2
Ivan Damgård: Efficient Concurrent Zero-Knowledge in the Auxiliary String Model. EUROCRYPT 2000: 418–430 (link) https://www.iacr.org/cryptodb/data/paper.php?pubkey=2246