ZADOROZHNA, L. V.; HNATYK, B. I.; SITENKO, Y. A. Magnetic Field of Cosmic Strings in the Early Universe. Ukrainian Journal of Physics, [S. l.], v. 58, n. 4, p. 398, 2018. DOI: 10.15407/ujpe58.04.0398. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018308. Acesso em: 8 dec. 2021.