XIAOCHUN, Mei. Einstein’s Equations of Gravity Fields have No Linear Wave Solutions under Weak Conditions. International Astronomy and Astrophysics Research Journal, [S. l.], v. 4, n. 1, p. 87–106, 2022. Disponível em: https://www.journaliaarj.com/index.php/IAARJ/article/view/65. Acesso em: 30 oct. 2026.