Adomou, A., et al. “Exact Static Spherical Symmetric Soliton-Like Solutions to the Scalar and Electromagnetic Nonlinear Induction Field Equations in General Relativity”. International Journal of Basic and Applied Sciences, vol. 10, no. 2, Dec. 2021, pp. 51-61, https://doi.org/10.14419/ijbas.v10i2.31747.