- Publication venue
- Publication date
- 25/12/1990
- Field of study
- Publication venue
- Publication date
- 25/12/1989
- Field of study
- Publication venue
- Publication date
- 25/12/1992
- Field of study
- Publication venue
- Publication date
- 25/12/1991
- Field of study
- Publication venue
- Publication date
- 25/12/1991
- Field of study