Electronic commerce - Congresses.

Challenges of Expanding Internet: E-Commerce, E-Business, and E-Government = 5th IFIP Conference e-Commerce, e-Business, and e-Government (I3E' 2005), October 28-30, 2005, Poznan, Poland / by: (Language materials, printed)

Business enterprises

Computer Communication Networks.

Computer Science.

Database Management.

Data Encryption.

Electronic commerce

Electronic Commerce/e-business.

Information Systems Applications (incl.Internet)

Internet in public administration

Public administration