Domenico Campolo Eliseo Stefano Maini Francesco Patane Cecilia Laschi Paolo Dario Flavio Keller Eugenio Guglielmelli Design of a Sensorized Ball for Ecological Behavioral Analysis of Infants. 1529-1534 2007 conf/icra/2007 ICRA http://dx.doi.org/10.1109/ROBOT.2007.363541 db/conf/icra/icra2007.html#CampoloMPLDKG07