1. Bye M, Wanvik L, Karp T. 2000. FPDSO with near surface disconnect drilling system. Offshore Technology Conference; May 1–4; Houston, TX, USA.
2. de Jaap W. 2007. Exploratory freestanding riser VIM model tests. 3rd International Workshop on Applied Offshore Hydrodynamics (IWAOH). Rio de Janeiro, Brazil.
3. Guo R. 2012. Study on buoyancy can group for freestanding drilling riser system [master's thesis]. Qingdao, China: China University of Petroleum. (In Chinese)
4. Guo Y, Ji S, Tang L, Lim F, Zhang H, Ching L. 2015. A major offshore trial of a free-standing mid-depth BOP drilling riser system. Offshore Technology Conference; May 4–7; Houston, TX, USA.
5. Guo Y, Song L, Zeng H, Qiu Z. 2015. A field trial of a new system using both free-standing drilling riser and mid-depth BOP in the South China Sea. Proceedings of the 25th International Ocean and Polar Engineering conference; Jun 16−21; Honolulu, HI, USA.