Ed. Henry C. Lucas Jr..IFIP TC8.2 Working Conference on the Information Systems Environment (1979 : Bonn)：The information systems environment．Organized by IFIP Technical Committee 8, Information Systems International Federation for Information Processing.North-Holland,1980.
IFIP TC8.2 Working Conference on the Information Systems Environment (1979 : Bonn)：The information systems environment．Organized by IFIP Technical Committee 8, Information Systems International Federation for Information Processing
