by Guvendi, Abdullah
Published in International journal of modern physics. A, Particles and fields, gravitation, cosmology (10.07.2021)

by Ahmed, Faizuddin
Published in Annals of physics (01.10.2023)

by Flachi, Antonino
Published in International journal of modern physics. D, Gravitation, astrophysics, cosmology (01.08.2015)

by Fabbri, Alessandro, Navarro-Salas, José
Year of Publication 2005