| |
| 1994 | ||
|---|---|---|
| 2 | E. N. El-Sayed: The Missing Paradigm - Panel Position Paper. IFIP Congress (3) 1994: 444-446 | |
| 1993 | ||
| 1 | E. N. El-Sayed: Autopoiesis as a Conceptual Framework for Information Systems Engineering. Systems Engineering in Public Administration 1993: 97-108 | |