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Stereotropic reactions of the shovel-nosed ray, Rhinobatus productus. Journal of General Physiology, 4(1), 11–18
DOI: 10.1085/jgp.4.1.11
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The stereotropism of the dogfish (Mustelus californicus) and its reversal through change of intensity of the stimulus. Journal of General Physiology, 4(1), 19–28
DOI: 10.1085/jgp.4.1.19