неупругая деформация . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kool_KV/%D0%BD%D0%B5%D1%83%D0%BF%D1%80%D1%83%D0%B3%D0%B0%D1%8F%20%D0%B4%D0%B5%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%86%D0%B8%D1%8F/1/rus (21.06.2026)