Foreword postscript (2017) - Roderik C. Lindenbergh (author), Roderik Lindenbergh (author), R.C. Lindenbergh (author), R. Lindenbergh (author), R. C. Lindenbergh (author), Bisheng Yang (author), Jan Boehm (author), Martin Rutzinger (author), M. Rutzinger (author), Wei Yao (author), Martin Weinmann (author)