- Publication venue
- Digital Commons @ DU
- Publication date
- 01/01/2009
- Field of study
- Publication venue
- Scholar Commons
- Publication date
- 01/01/1999
- Field of study
- Publication venue
- Scholarship Repository
- Publication date
- 01/01/2002
- Field of study
- Publication venue
- Scholarship Repository
- Publication date
- 01/01/2008
- Field of study
- Publication venue
- Scholarship Repository
- Publication date
- 01/01/2011
- Field of study