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Continue to ChatON PARAMETRIC LOWER BOUNDS FOR DISCRETE-TIME FILTERING - https://avesis.metu.edu.tr/yayin/61471234-566f-4c08-8e06-20da0583b521/on-parametric-lower-bounds-for-discrete-time-filtering
ON PARAMETRIC LOWER BOUNDS FOR DISCRETE-TIME FILTERING - https://avesis.metu.edu.tr/yayin/61471234-566f-4c08-8e06-20da0583b521/on-parametric-lower-bounds-for-discrete-time-filtering