THANG, Bui Quyet; HUONG, Do Thi. A Spherically Symmetric Solution of \(R+\lambda R^2\) Gravity. <b>Communications in Physics</b>, <i>[S. l.]</i>, v. 24, n. 3S2, p. 23–28, 2014. DOI: 10.15625/0868-3166/24/3S2/4991. Disponível em: https://vjs.ac.vn/cip/article/view/4991. Acesso em: 2 jan. 2026.