@article{el- nabulsi_2010,  title={Effective cosmology a la Brans-Dicke with a non-minimally coupling massive inflaton field interacting with minimally coupling massless field},  volume={40},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332010000300003},  DOI={10.1590/S0103-97332010000300003},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={El- Nabulsi, Ahmad Rami},  year={2010},  month={Sep},  pages={273–282} }