@inproceedings{SPP-2021-PC-07, title={Cosmic expansion with perturbed Friedmann equations}, volume={39}, booktitle={Proceedings of the Samahang Pisika ng Pilipinas}, author={Palpal-latoc, Carl Justin and Vega, Michael Francis Ian G.}, year={2021}, pages={SPP-2021-PC-07}, url={https://proceedings.spp-online.org/article/view/SPP-2021-PC-07} }