This author has not been identified. Look up 'J. Janzen' in GoogleThis author has not been identified. Look up 'P. Schlindwein' in GoogleThis author has not been identified. Look up 'S. Bense' in GoogleThis author has not been identified. Look up 'Thomas Bauermann' in GoogleThis author has not been identified. Look up 'Goran Vucurevic' in GoogleThis author has not been identified. Look up 'Peter Stoeter' in GoogleThis author has not been identified. Look up 'M. Dieterich' in Google