VISITING PROFESSORSHIP:
| Jan - Aug 1980 | Visiting Professor at NASA Ames Research Centre, Moffett | |
| ¡@ | ¡@ | Field, California, USA and, concurrently, |
| ¡@ | Visiting Professor (Navair Research Chair) at US Naval | |
| ¡@ | ¡@ |
Postgraduate School, Monterey, California, USA |
| Sept 1985 - Aug 1986 | Visiting Professor at University of Arizona, Tucson, Arizona, | |
| ¡@ | ¡@ | USA |