Distributed Road Surface Condition Monitoring Using Mobile Phones. - Mikko Perttunen; Oleksiy Mazhelis; Fengyu Cong; Mikko Kauppila; Teemu Leppänen; Jouni Kantola; Jussi Collin; Susanna Pirttikangas; Janne Haverinen; Tapani Ristaniemi; Jukka Riekki (UIC, 2011)