books.google.co.uk - Time-to-contact is the visual information that observers use in fundamental tasks such as landing an airplane or hitting a ball. Time-to-contact has been a hot topic in perception and action for many years and although many articles have been published on this topic, a comprehensive overview or assessment...http://books.google.co.uk/books/about/Time_to_contact.html?id=cwUzsoHuAbAC&utm_source=gb-gplus-shareTime-to-contact
