- document
- Glykas, A. (author) journal article 2010
- document
- Kwack, Sang-Hyun (author) journal article 2007
- document
- Kumar, V.S. (author) journal article 2003
- document
- Field, A. (author) journal article 2002
- document
- Burrows, I.E. (author) journal article 1993
- document
- Brink, L. (author), Helwig, A.P. (author) journal article 1990
- document
- Brink, L. (author), Helwig, A.P. (author) journal article 1990
- document
- Brink, L. (author) journal article 1989
- document
- Heller, S.R. (author) journal article 1959
- document
- Helm, Kurt (author) journal article 1950
- document
- Helm, Kurt (author) journal article 1949
- document
- v d Burgt, J.H. (author) journal article 1947
- document
- Hoffmann, G.H. (author) journal article 1930