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[127] Dodge: “A systematic exploration of a normal knee jerk, its technique, the form of the muscle contraction, its amplitude, its latent time and its theory.” Zeitsch. f. allgem. Physiol. Bd. XII, 1911.

[128] Gotch and Burch: “The electrical response of nerve to two stimuli.” Journ. of Physiology, Vol. XXIV, 1899.

[129] Florence Buchanan: “The electrical response of muscle in different kinds of persistent contraction.” Journ. of Physiology, Vol. XXVII, 1901–1902.

[130] Keith Lucas: “On the refractory period of muscle and nerve.” Journ. of Physiology, Vol. XXXIX, 1909–1910.

[131] Massart: Annales de l’Institut Pasteur 1901.

[132] Jennings: “Studies on reactions to stimuli in unicellular organisms.” IX. American Journal of Physiology, 1902.

[133] Bowditch, 1. c.

[134] Hidetsurumaru Ishikawa: “Ueber die scheinbare Bahnung.” Zeitschrift f. allgem. Physiologie Bd. XI, 1910.

[135] Langendorff u. Winterstein: “Beiträge zur Reflexlehre.” Pflüger’s Arch. Bd. 127, 1909.