A model of piracy. - Sang Hoo Bae; Jay Pil Choi (Inf. Econ. Policy, 2006)

Firms' Optimal Digital Rights Management (DRM) Strategies: The Effects of Public Copy Protection and DRM Compatibility. - Sang Hoo Bae; Pilsik Choi (WEIS, 2008)

Digital piracy and firms' strategic interactions: The effects of public copy protection and DRM similarity. - Pilsik Choi; Sang Hoo Bae; Jongbyung Jun (Inf. Econ. Policy, 2010)