Book chapter (1998) - AM Mulders (author) , P. C M Gubbens (author) , JJM Franse (author) , CT Kaiser (author) , A. Amato (author) , R Feyerherm (author) , FN Gygax (author) , A Schenck (author) , P Dalmas De Réotier (author) , A Yaouanc (author) , F Kayzel (author)

Journal article (1998) - FM Mulder (author) , RC Thiel (author) , LD Tung (author) , JJM Franse (author) , KHJ Buschow (author)