1. An investigation of the driving wheel thrust of paddy field tractors;Zhuorong,1984
2. Tests conducted at University of California;Soemengat,1962
3. A research of the dynamic performance of the paddle driving wheel working on soft terrain;Da,1987
4. Interactions in soil-lug system (part 1);Tanaka;J. Japanese Soc. agric. Mach (JSAM),1986
5. Interactions in soil-lug system (part 2);Tanaka;J. Japanese Soc. agric. Mach. (JSAM),1988