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Cynthia Marshall Faux and Kevin Padian (2007). The Opisthotonic Posture of Vertebrate Skeletons: Postmortem Contraction or Death Throes?. Paleobiology, 33(2), 201–226. doi:10.2307/4500148 
10.1002/abio.370040210
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research