S. sudjana, “AKIBAT HUKUM PENGHAPUSAN DAN PEMBATALAN MEREK TERDAFTAR TERHADAP HAK ATAS MEREK (Eletion and Cancellation of Registered Marks in The Perspective of Legal Certainty)”, RNLJ, vol. 2, no. 2, pp. 119-140, Jul. 2020.