@article{asystematicreviewofkeyretrievalaugmented,
  title = {A Systematic Review of Key Retrieval-Augmented Generation (RAG) Systems: Progress, Gaps, and Future Directions},
  author = {Agada Joseph Oche and Ademola Glory Folashade and Tirthankar Ghosal and Arpan Biswas},
  year = {2025},
  eprint = {2507.18910},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2507.18910},
}