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Klocke, David; Schmitz, Helmut . (2012). Material properties of photomechanical infrared receptors in pyrophilous Melanophila beetles and Aradus bugs. Acta Biomaterialia, 8(9), 3392–3399. doi:10.1016/j.actbio.2012.05.020 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research