@book{1983-chaum ,title={{Advances in cryptology: proceedings of Crypto 82}} ,booktitle={{Advances in cryptology: proceedings of Crypto 82}} ,editor={David Chaum and Ronald L. Rivest and Alan T. Sherman} ,ISBN={0--306--41366--3} ,MR={84j:94004} ,publisher={Plenum Press} ,address={New York} ,year={1983} }