@article{hu2022when,
    title={When Do Extended Physics-Informed Neural Networks (XPINNs) Improve Generalization?},
    author={Hu, Zheyuan and Jagtap, Ameya D and Karniadakis, George Em and Kawaguchi, Kenji},
    journal={SIAM Journal on Scientific Computing},
    volume={44},
    pages={A3158A3182},
    year={2022},
}