\input zb-basic \input zb-ioport \iteman{io-port 50239681} \itemau{Jung, Soon Ki; Wohn, Kwangyun} \itemti{Tracking and motion estimation of the articulated object: a hierarchical Kalman filter approach} \itemso{Real-Time Imaging 3, No. 6, 415-432 (1997).} \itemcc{} \itemut{} \itemli{doi:10.1006/rtim.1997.0078} \end