1. Blind signatures for untraceable payments;Chaum,1983
2. Anonymous authentication protocols with credit-based chargeability and fair privacy for mobile communications;Fan,2007
3. Customer efficient electronic cash protocols;Fan;Journal of Organizational Computing and Electronic Commerce,2007
4. A practical anonymous multi-authority e-cash scheme;Juang;Applied Mathematics and Computation,2004
5. Untraceable off-line cash in wallet with observers;Brands,1993