preliminary investigation . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/preliminary%20investigation/1/eng (20.06.2026)
preliminary investigation . Siseturvalisuse terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//sisek/preliminary%20investigation/1/eng (20.06.2026)