Conference paper (2014) - X Zhang (author), X. Zhang (author), Xuedong Zhang (author), J Paaso (author), K Rahkamaa-Tolonen (author), W. Li (author), W Hietala (author), J. B. van Lier (author), Jules B. van Lier (author), Jules Van Lier (author), JB van Lier (author), JB Van Lier (author), Jules van Lier (author), J.B. Van Lier (author), J. B. Van Lier (author), Jules B. Van Lier (author), J.B. van Lier (author), Henri Spanjers (author), H. Spanjers (author)