Journal article (2014) - H Holstege (author), Wulf Pfeiffer (author), H Meijers-Heijboer (author), MH Brugman (author), FJT Staal (author), G Holstege (author), M.J.T. Reinders (author), TT Harkins (author), S levy (author), Erik A. Sistermans (author), D. Sie (author), M. Hulsman (author), TJ Nicholas (author), CC Lee (author), T Ross (author), J Lin (author), MA Miller (author), B Ylstra (author)

Conference paper (2008) - P Los (author), S levy (author), AR lynce (author), R Witter (author)