Kumar, N. K. “Extension of Almost Contact Structure ( ϕ_4,ξ_4,η_4) on (Ν^(4n+3)⨂R^d)≅ M^(5n+4)”. Ganeshman Darpan, vol. 9, no. 1, Aug. 2024, pp. 27-32, doi:10.3126/gd.v9i1.68550.