KUMAR, Nand Kishor. Extension of Almost Contact Structure ( ϕ_4,ξ_4,η_4) on (Ν^(4n+3)⨂R^d)≅ M^(5n+4). Ganeshman Darpan, [S. l.], v. 9, n. 1, p. 27–32, 2024. DOI: 10.3126/gd.v9i1.68550. Disponível em: https://www.nepjol.info/index.php/gd/article/view/68550. Acesso em: 6 dec. 2025.