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2. Processing of electrical activity in human muscles during a gradual increase in Force;Christensen;Electroenceph. clin. Neurophysiol.,1984
3. Motor Function in the Lower Extremity; Analyses by Electronic Instrumentation;Close,1964
4. An analyser for use in human electromyography;Fitch;Electron. Engng.,1967
5. Electrical activity and force during voluntary contraction of normal and diseased muscle;Fuglsang-Frederiksen;Acta neurol. scand.,1981