| in paper |
 Thomas Ritz (2001) Personalized Information Services – an Electronic Information Commodity and ist Production
|
|---|---|
| authors |
 Berghel. Hal
|
| year | 1999 |
| title |
Value-Added Publishing
|
| source | Communications of the ACM 42 (1): 19-23 |
| last changed | 2008/06/07 10:15 |
