Book chapter (2000) - Fred J. Vermolen (author), Fred Vermolen (author), FJ Vermolen (author), F. J. Vermolen (author), F.J. Vermolen (author), CR Geel (author), CR Geel (author), OHM Barzandji (author), Pacelli L.J. Zitha (author), Pacelli Zitha (author), P. Zitha (author), P. L.J. Zitha (author), P. L.J. L.J. Zitha (author), P.L.J. Zitha (author), PLJ Zitha (author), P. L.J. Zitha (author), P.L.J. L.J. Zitha (author), Pacelli L.J. L.J. Zitha (author), PLJ L.J. Zitha (author), P. L. J. Zitha (author), P. L. J. L.J. Zitha (author), Pacelli L.J. Zitha (author), AMM Elfeki (author), AMM Elfeki (author), Hans Bruining (author), Johannes Bruining (author), J. Bruining (author), H Duijn (author)