@article{ortega2021multimodal,
  title={A multimodal approach for regional GDP prediction using social media activity and historical information},
  author={Ortega-Bastida, Javier and Gallego, Antonio Javier and Rico-Juan, Juan Ram{\'o}n and Albarr{\'a}n, Pedro},
  journal={Applied Soft Computing},
  volume={111},
  pages={107693},
  year={2021},
  publisher={Elsevier},
  doi={10.1016/j.asoc.2021.107693}
}