Journal article (2013) - A. Haber (author), A. Polo (author), H. P. Paul Urbach (author), H. Paul Urbach (author), H. Paul Urbach (author), Paul Urbach (author), P. Urbach (author), HP Urbach (author), Paul Paul Urbach (author), H.P. Paul Urbach (author), H.P. Urbach (author), Hendrik Paul Paul Urbach (author), P. Paul Urbach (author), H. Urbach (author), HP Paul Urbach (author), Hendrik Paul Urbach (author), H. Paul Paul Urbach (author), H. P. Urbach (author), M. Verhaegen (author), M.H.G. Verhaegen (author), Michel Verhaegen (author), M Verhaegen (author), S Ravensbergen (author)