Kalinina, Natalia V., Alla V. Solovyova, Tatyana A. Popova, Irina D. Levina, Larisa N. Gorbunova, and Sergey Ignatov. “A Phenomenon of Hardiness As an Integral Feature of Personal Potential”. Cypriot Journal of Educational Sciences 15, no. 5 (October 29, 2020): 1354–1367. Accessed May 16, 2024. https://un-pub.eu/ojs/index.php/cjes/article/view/5175.