TY - JOUR T1 - Mitigating Catastrophic Forgetting in Target Language Adaptation of LLMs via Source-Shielded Updates JO - Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) UR - https://doi.org/10.18653/v1/2026.acl-long.865 PY - 2026/01/01 AU - Yamaguchi A AU - Morishita T AU - Villavicencio A AU - Aletras N ED - DO - DOI: 10.18653/v1/2026.acl-long.865 PB - Association for Computational Linguistics SP - 18949 EP - 18975 Y2 - 2026/08/03 ER -