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Hsiao, Tzu-Kan; Chang, Hsu-Kai; Liou, Sz-Chian; Chu, Ming-Wen; Lee, Si-Chen; Chang, Chih-Wei . (2013). Observation of room-temperature ballistic thermal conduction persisting over 8.3 µm in SiGe nanowires. Nature Nanotechnology, 8(7), 534–538. doi:10.1038/nnano.2013.121 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research