Satoshi Hada, Toshiaki Tanaka. On the Existence of 3-Round Zero-Knowledge Protocols. IACR Cryptology ePrint Archive, 1999:9, 1999. [doi]
@article{HadaT99-1, title = {On the Existence of 3-Round Zero-Knowledge Protocols}, author = {Satoshi Hada and Toshiaki Tanaka}, year = {1999}, url = {http://eprint.iacr.org/1999/009}, researchr = {https://researchr.org/publication/HadaT99-1}, cites = {0}, citedby = {0}, journal = {IACR Cryptology ePrint Archive}, volume = {1999}, pages = {9}, }