1. An evaluation of the energy required to cut forage stalk;Fisher;Agric. Expt. Sta. Progress Report 17,1957
2. Energy requirement of cutting forage;Chancellor;Agric. Engng, St Joseph, Mich.,1958
3. A study of some design factors affecting the performance of mower knives;McClelland;J. agric. Engng Res.,1958
4. Effects of knife angles and velocities on cutting of stalks without a counter-edge;Feller;J. agric. Engng Res.,1959
5. Measurement of ultimate strength of forage stalks;Prince;Trans. A.S.A.E.,1961