LUONG MINH, Tuan; TA THANH, Long; DUONG XUAN, Nui; DAO XUAN, Viet; NGUYEN BA, Đuc; NGUYEN DUC TRUNG, Kien. Helicity modulus in a q-state clock model. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 6, n. 15, p. 5–9, 2021. DOI: 10.51453/2354-1431/2020/351. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/351. Acesso em: 31 aug. 2025.