@misc{castrodelosreyesneitzel,
      title={Analysis of Four-Dimensional Variational Data Assimilation Problems in Low Regularity Spaces}, 
      author={Paula Castro and Juan Carlos de los Reyes and Ira Neitzel},
      year={},
      eprint={2303.00847v2},
      archivePrefix={arXiv},
      primaryClass={math.OC},
      url={https://arxiv.org/abs/2303.00847v2}, 
}