Panagiotis Andreou enhanced arXiv handling in the JabRef/jabref repository by developing a feature that separates the arXiv prefix from the EPRINT field, enabling more precise data normalization for bibliographic entries. He implemented robust parsing logic in Java, focusing on data validation to accommodate a wide range of input scenarios, including corrupt or malformed data. To ensure reliability and prevent regressions, he wrote comprehensive unit tests covering edge cases. This targeted engineering work improved the quality and consistency of arXiv metadata, streamlining downstream indexing and search processes while reducing manual data cleanup for researchers using JabRef.