Margarita Permiakova, Olga Vindeker, Irina Ershova, Svetlana Pavlova, Natalya Khon, Irina Dmitrieva, and Valeriya Semkina. 2020. “Comparative Study of Hardiness Among Student-Athletes and Non-Athletes”. Revista De Psicología Del Deporte (Journal of Sport Psychology) 29 (2):221–229. https://www.rpd-online.com/index.php/rpd/article/view/3.