title: Gradient-enhanced physics-informed neural networks for forward and inverse PDE problems authors: Jeremy Yu, Lu Lu, Xuhui Meng, George Em Karniadakis year: 2022 URL: https://doi.org/10.48550/arXiv.2111.02801 Drive: https://1drv.ms/b/s!Ar4x-UlrYAiZla8fqTeJApcwO8Ng?e=lpsaxB –-