Journal article (2013) - GC Krijger (author), B Ponsard (author), M Harfensteller (author), Hubert Th. Wolterbeek (author), Bert Wolterbeek (author), Hubert T. Wolterbeek (author), H. T. Wolterbeek (author), HT Wolterbeek (author), Hubert Wolterbeek (author), Hubert Th Wolterbeek (author), H.T. Wolterbeek (author), JFW Nijsen (author)