Physics‐Informed Neural Networks for Elliptical‐Anisotropy Eikonal Tomography: Application to Data From the Northeastern Tibetan Plateau Y Chen, SAL de Ridder, S Rost, Z Guo, X Wu, S Li, Y Chen Journal of Geophysical Research: Solid Earth 128 (12), e2023JB027378, 2023 | 2 | 2023 |