VIET HOANG, Bach. SPECTRAL RADIUS CONDITIONS FOR CONNECTED PLANAR GRAPHS TO HAVE A FEW CUT-EDGES. HNUE Journal of Science: Journal of Natural Sciences, [S. l.], v. 71, n. 3, p. 3–8, 2026. DOI: 10.18173/2354-1059.2026-0027. Disponível em: https://hnuejs.edu.vn/ns/article/view/1594. Acesso em: 1 oct. 2026.