7Harrison H P.Soil reacting forces for two tapered bentleg plows[J].Transactions of the ASAE,1990,33(5):1473-1476.
8Harrison H P.Soil reacting forces for a bentleg plow[J].Transactions of the ASAE.1988,31(1):47-51.
9Harrison H P,licsko J Z.Soil reacting wrenches and dynamics for three models of bentleg plows[J].Transactions of the ASAE,1989,32(1):50-53.
10Araya K.Optimization of the design of subsoiling and pressurized fluid injection equipment[J].Journal of Agricultural Engineering Research,1994,57(1):39-52.
