Report (2011) - J. Van Den Berg (author), J Van Den Berg (author), J van den Berg (author), J. van den Berg (author), Jan Van Den Berg (author), Jan van den Berg (author), U Kaymak (author), Uzay Kaymak (author), R Almeida (author)

Journal article (2011) - G Mathies (author), H Blok (author), JAJM Disselhorst (author), P Gast (author), H. van der Meer (author), DM Miedema (author), R Almeida (author), JJG Moura (author), WR Hagen (author), Wilfred R. Hagen (author), Fred Hagen (author), W.R. Hagen (author), EJJ Groenen (author)