Autonomous robotic system for tunnel structural inspection and assessment - Loupos, Konstantinos; Doulamis, Anastasios D; Stentoumis, Christos; Protopapadakis, Eftychios; Makantasis, Konstantinos; Doulamis, Nikolaos D.; Amditis, Angelos; Gonzalez Victores, Juan Carlos; Montero Perez, Roberto; Menendez Salvador, Elisabeth; Balaguer Bernaldo De Quiros, Carlos; Chrobocinski, Philippe; et al. (International Journal of Intelligent Robotics and Applications (International Journal of Intelligent Robotics and Applications), 2018)