This author has not been identified. Look up 'Amit Kumar Pal' in GoogleThis author has not been identified. Look up 'Philipp Schindler' in GoogleThis author has not been identified. Look up 'Alexander Erhard' in GoogleThis author has not been identified. Look up 'Angel Rivas' in GoogleThis author has not been identified. Look up 'Miguel-Angel Martin-Delgado' in GoogleThis author has not been identified. Look up 'Rainer Blatt' in GoogleThis author has not been identified. Look up 'Thomas Monz' in GoogleThis author has not been identified. Look up 'Markus Müller' in Google