Aspek yuridis mengenai sistem dan metode pembayaran on line yang diberikan paten (pendekatan kasus: PT. Garuda Indonesia (Persero) vs Bagus Tanuwidjaja) = legal aspect of online payment system and method that is granted by patent (case approach : pt. garuda indonesia (persero) vs bagus tanuwidjaja) - Axel, Ignatius (2015)