Book (2007) - K. Bertels (author), K.L.M. Bertels (author), KLM Bertels (author), K Bertels (author), Koen Bertels (author), W Najjar (author), A.J. van Genderen (author), Stamatis Vassiliadis (author), S Vassiliadis (author), S Vassiliadis (author), Stamatis Vassiliadis (author)