Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Kai Cai and Renyuan Zhang and W. M. Wonham,Relative Observability of Discrete-Event Systems and Its Supremal Sublanguages,IEEE Transactions on Automatic Control,0018-9286,Institute of Electrical and Electronics Engineers (IEEE),2015-03,60,3,659-670,https://cir.nii.ac.jp/crid/1362544421422475008,https://doi.org/10.1109/tac.2014.2341891