\input zb-basic \input zb-ioport \iteman{io-port 70153804} \itemau{Wimmer, Matthias; Mayer, Christoph; Stulp, Freek; Radig, Bernd} \itemti{Estimating natural activity by Fitting 3D models via learned objective functions} \itemso{VMV, 233-242 (2007).} \itemcc{} \itemut{} \itemli{} \end