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2. Derselbe, Brain 1911. Reflex Mechanism of the step.
3. Derselbe, Journal of Physiology. Vol.22. 1898. Decerebr. rigidity.
4. V. Horsley, Brain 1905. 1907.
5. F. H. Thiele, Proc. Royal Society. Vol.76. Decerebr. Rigidity, Cerebellum etc.