Conference paper (2014) - X Zhao (author), Xiaojia Zhao (author), X. Zhao (author), M Urdu (author), WJC Verhagen (author), Wim Verhagen (author), W. J.C. Verhagen (author), W.J.C. Verhagen (author), Wim J.C. Verhagen (author), Ricky Curran (author), R Curran (author), Richard Curran (author), R. Curran (author)