Barbara Bruno, Carmine Recchiuto, Irena Papadopoulos, Alessandro Saffiotti, Roberto Menicatti, Fulvio Mastrogiovanni, Renato Zaccaria, Antonio Sgorbissa, Knowledge Representation for Culturally Competent Personal Robots – Requirement, design principles, implementation, and assessment, International Journal of Social Robotics, 11(3), pp. 515-538