Poster (2004) - MR Mashego (author), JR Corcoi (author), JL Vinke (author), W.M. van Gulik (author), Walter M. van Gulik (author), Walter van Gulik (author), Sef Heijnen (author), Joseph J. Heijnen (author), JJ Heijnen (author), J.J. Heijnen (author), J. J. Heijnen (author)