- document
- Clauss, Günther F. (author), Lehmann, E. (author), Ostergaard, C. (author) report 1992
- document
- Ostergaard, C. (author), Schellin, T.E. (author) journal article 1987
- document
- Clauss, Günther F. (author), Lehmann, E. (author), Ostergaard, C. (author) report
- document
- Clauss, Günther F. (author), Ostergaard, C. (author), Lehmann, E. (author) report