1. Oscillation of tillage implements;Gunn;Agric. Engng.,1955
2. Experimental data on the effect of oscillation on the cutting resistance of soil;Shkurenko,1958
3. Gruber mit schwingenden Werkzeugen (cultivator with oscillating tools) Grundl.;Eggenmuller;Landtech.,1959
4. The use of oscillation techniques for improving agricultural technological processes;Dubrovskii;Mekhaniz. Elektrif. Sots. Sel. Khoz.,1962
5. The tillage energy of a vibrating tillage tool;Hendrick;Trans. ASAE,1963