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2. Blum: Coinflipping by telephone: Protocols for solving impossible problem. Proc. of 24. IEEE CompCon, 1982.
3. Chaum, Damgård and Crepeau: Fundamental primitives for multiparty unconditionally secure protocols. To appear.
4. Chaum: Demonstrating that a public predicate can be satisfied while revealing no information about how. Proc. of Crypto 86.
5. Chaum: How to keep a secret alive. Proc. of Crypto 84.