TELEUCA, Marcel, and Mihai SPINEI. “THE METHODOLOGY OF USING THE LIFTING EXPONENT LEMMA AND HANSEL’S LEMMA IN CONTEST PROBLEMS ”. Acta et Commentationes Sciences of Education 18, no. 4 (November 20, 2019): 86-90. Accessed October 16, 2024. https://revistaust.upsc.md/index.php/acta_educatie/article/view/475.