радиоактивные осадки . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026.
https://sonaveeb.ee/search/unif//kool_KV/%D1%80%D0%B0%D0%B4%D0%B8%D0%BE%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%BD%D1%8B%D0%B5%20%D0%BE%D1%81%D0%B0%D0%B4%D0%BA%D0%B8/1/rus (27.10.2026)

радиоактивные осадки . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026.
https://sonaveeb.ee/search/unif//kool_KV/%D1%80%D0%B0%D0%B4%D0%B8%D0%BE%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%BD%D1%8B%D0%B5%20%D0%BE%D1%81%D0%B0%D0%B4%D0%BA%D0%B8/1/rus (27.10.2026)