1. Automatic control in construction machines;Chiba;Journal of SICE,1982
2. Automation in construction machinery;Nakamura;Hitachi Review,1975
3. Development of large hydraulic excavator;Nakano;Mitsubishi Heavy Industries Technical Review,1985
4. Modeling and control of power shovel;Morita;Transactions of SICE,1986
5. Automatic control system for hydraulic excavator;Araya;R&D Kobe Steel Engineering Reports,1987