* استخبارات السوق* مؤشر تقسيم السوق* سوق متخصصة فرعيةRayport and Sviokla (1995), Exploiting the virtual value chain, Havard Business ReviewRayport and Sviokla (1994), Managing in the marketplace, Harvard Business Review (Nov.-Dec. 1994): 141-150.
== References ==Rayport and Sviokla (1995), Exploiting the virtual value chain, Havard Business ReviewRayport and Sviokla (1994), Managing in the marketplace, Harvard Business Review (Nov.-Dec. 1994): 141-150.