ENAYAT, Enayatullah. Using Tree Graphs to Solve Some Problems in Combinatorial Analysis. Samangan Academic & Research Journal, [S. l.], v. 2, n. 01, p. 90–105, 2024. DOI: 10.64226/sarj.v2i01.47. Disponível em: https://researchsparker.edu.af/index.php/SARJ/article/view/47. Acesso em: 12 jul. 2025.