Journal article (2012) - W Worst (author), Francois Clemens (author), F.H.L.R. Clemens (author), François Clemens (author), François H L R Clemens (author), F. H L R Clemens (author), Francois H.L.R. Clemens (author), François H.L.R. Clemens (author), F. H.L.R. Clemens (author), A van Nieuwenhuijzen (author), A Oomens (author)