JESSII, P. Space Equations . Annals of Mathematics and Physics, [S. l.], v. 2, n. 1, p. 001–004, 2019. DOI: 10.17352/amp.000003. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-2-103. Acesso em: 10 jan. 2025.