1. Design of a robot capable of moving on a vertical wall;Nishi;Advanced Robotics,1986
2. Development of wall climbing robot for inspection of concrete structure (in Japanese);Nakajima,1991
3. Vacuum adhering crawler system “VACS”;Nagatsuka;Robot,1989
4. Development of wall-climbing robot (in Japanese);Ikeda,1990
5. Development of wall-climbing robot and its application to nuclear power plant (in Japanese);Sato;Piping Technology,1987