Conference paper (2013) - B. Zhang (author), B Zhang (author), G Kreitz (author), M Isaksson (author), J Ubillos (author), G Urdaneta (author), Johan Pouwelse (author), JA Pouwelse (author), J.A. Pouwelse (author), Dick H.J. Epema (author), DHJ Epema (author), D.H.J. Epema (author), Dick Epema (author)