- Publication venue
- DigitalCommons@Providence
- Publication date
- 01/10/1990
- Field of study
- Publication venue
- 'The University of Kansas'
- Publication date
- 01/09/1991
- Field of study
- Publication venue
- 'The University of Kansas'
- Publication date
- 01/03/1989
- Field of study
- Publication venue
- 'The University of Kansas'
- Publication date
- 01/09/1991
- Field of study
- Publication venue
- 'Universidad Veracruzana'
- Publication date
- 01/01/2000
- Field of study