R. L. PATEL; S. K. PANDEY; R. N. SINGH. Ricci Solitons on ($\epsilon$)-Para Sasakian Manifolds. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 1 - A, p. 73–82, 2018. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/899. Acesso em: 3 jul. 2024.