Penerapan prinsip notifikasi post merger berdasarkan hukum persaingan usaha di Indonesia (studi kasus terhadap pengambilalihan saham PT Axis Telekom Indonesia oleh PT XL Axiata TBK) = The application of post merger notification based on the principle of business competition law in Indonesia (case study against acquisition of shares of PT Axis Telekom Indonesia by PT XL Axiata Tbk) - Indra Sofian, author (2014)