Gataullina Kamila Nailevna, Mustafina Jamila Nasyhovna, Maklakova Evgeniya Mikhaylovna, Ganieva Gulnara Ramilevna, and Maksimova Elvira Vladimirovna. “Assessing Language Vitality: Overview of Exisiting Models”. Opción 34, no. 1 (June 10, 2019): 1144-1163. Accessed October 30, 2025. https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/24176.