https://www.ets.org/research/policy_research_reports/publications/chapter/2014/jvtx.html
Test Security and Quality Control for Multistage Tests
security and qualitytestcontrolmultistage
https://www.cambridgeenglish.org/educators-organisations/accept-verify-exams/higher-education-institutions/exam-security/
Exam security and quality | Cambridge English
Cambridge English exams have enhanced security built into every stage and are certified for quality management. Learn how this can benefit your institution.
security and qualityexamcambridgeenglish