TAKAGI, Hiromichi. Constructing prime $\mathbb{Q}$-Fano threefolds of codimension four via key varieties related with $\mathbb{P}^2\times \mathbb{P}^2$-fibrations. MATHEMATICA SCANDINAVICA, [S. l.], v. 131, n. 3, 2025. DOI: 10.7146/math.scand.a-158550. Disponível em: https://www.mscand.dk/article/view/158550. Acesso em: 5 dec. 2025.