- Publication venue
- Nato Advanced Study Institute
- Publication date
- 01/01/1989
- Field of study
- Publication venue
- 'Ovid Technologies (Wolters Kluwer Health)'
- Publication date
- 01/01/1990
- Field of study
- Publication venue
- 'American Institute of Mathematical Sciences (AIMS)'
- Publication date
- 01/01/2016
- Field of study