Lessons Learned in a Ball Fetch-And-Carry Robotic Competition. - Dario Lodi Rizzini; Stefano Caselli; Davide Valeriani; Andrea Signifredi; Isabella Salsi; Marco Patander; Federico Parisi; Alessandro Costalunga; Marco Cigolini (J. Autom. Mob. Robotics Intell. Syst., 2014)