Al Assaf، M. A. A.، و Kapadia، C. H. (1984). A COMPARISON OF FOUR VARIANCE COMPONENT ESTIMATORS IN REGULAR GROUP DIVISIBLE PARTIALLY BALANCED INCOMPLETE BLOCK DESIGNS (رسالة دكتوراه غير منشورة). Southern Methodist University، دالاس. مسترجع من http://search.mandumah.com/Record/616917
Al Assaf، Mohammad Abd Alaziz، و C. H. Kapadia. "A COMPARISON OF FOUR VARIANCE COMPONENT ESTIMATORS IN REGULAR GROUP DIVISIBLE PARTIALLY BALANCED INCOMPLETE BLOCK DESIGNS" رسالة دكتوراه. Southern Methodist University، دالاس، 1984. مسترجع من http://search.mandumah.com/Record/616917