References
- Korea Consumer Protection Board, 'Development of Safety Index for Improvement of Safety Management for Elevators', Korea Elevator Safety Board, 2005
- Gi Heung Choi, 'A Study on the Development of Certification System for Performance Evaluation of PPE and Safety Device', Occupational Safety and Health Research Institute, 2005
- J. B. Baek et al., 'A Study on Improvement of Inspection, Examination and Certification Process', Occupational Safety and Health Research Institute, 2002
- K. O. Lee et al., 'A Study on Improvement of Inspection', Occupational Safety and Health Research Institute, 2004