@misc{misc, title  = {{Four-valued monitorability of $\omega$-regular languages}},

 url = {{}},

 year = {{2020}},

 month = {{2}},

 author = {{Chen Z and Chen Y and Hierons RM and Wu Y}},

 doi = {{10.48550/arxiv.2002.06737}},

 note = {{Accessed on 2025/11/05}}}