This author has not been identified. Look up 'M. Meyer' in GoogleThis author has not been identified. Look up 'D. Libaers' in GoogleThis author has not been identified. Look up 'Bart Thijs' in GoogleThis author has not been identified. Look up 'K. Grant' in GoogleThis author has not been identified. Look up 'Wolfgang Glänzel' in GoogleThis author has not been identified. Look up 'Koenraad Debackere' in Google