This author has not been identified. Look up 'M. Sulaiman Khan' in GoogleThis author has not been identified. Look up 'Maybin K. Muyeba' in GoogleThis author has not been identified. Look up 'Frans Coenen' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'David Reid' in GoogleThis author has not been identified. Look up 'Hissam Tawfik' in Google