Al Qahtni، F. A. A.، و Redfern، M. (2007). An investigation into the use of on-load tap-change voltage control transformers in networks containing distributed ceneration (رسالة ماجستير غير منشورة). University of Bath، باث. مسترجع من http://search.mandumah.com/Record/612300
Al Qahtni، Fayez Abd Allah، و Miles Redfern. "An Investigation Into the Use of On-load Tap-change Voltage Control Transformers in Networks Containing Distributed Ceneration" رسالة ماجستير. University of Bath، باث، 2007. مسترجع من http://search.mandumah.com/Record/612300