длинный . EKI Combined Dictionary 2026. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif/dlall/eki/%D0%B4%D0%BB%D0%B8%D0%BD%D0%BD%D1%8B%D0%B9/1/rus (21.06.2026)
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длинный . Matemaatika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mat/%D0%B4%D0%BB%D0%B8%D0%BD%D0%BD%D1%8B%D0%B9/1/rus (21.06.2026)