1. Normatyvnyi dokument systemy tekhnichnoho zakhystu informatsiyi ND TZI 2.4-010-2015.
2. Normatyvnyi dokument systemy tekhnichnoho zakhystu informatsiyi ND TZI 2.3-019-2015.
3. Normatyvnyi dokument systemy tekhnichnoho zakhystu informatsiyi ND TZI 2.2-008-2015.
4. ASTM E2638-10. ASTM Intl., West Conshohocken, PA.
5. ANSI/ASA S3.37-1987 (R2017) American National Standard Preferred Earhook Nozzle Thread for Postauricular Hearing Aids. STANDARD by American National Standards of the Acoustical Society of America, 1987.01.01.