control apparatus . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/control%20apparatus/1/eng (19.06.2026)
control apparatus . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/control%20apparatus/1/eng (19.06.2026)