LITOVCHENKO, V. A. Holtsmark fluctuations of non-stationary gravitational fields. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 1, p. 69–76, 2021. DOI: 10.37863/umzh.v73i1.6113. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6113. Acesso em: 5 dec. 2025.