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Rajagopal Reddy, V.; Janardhanam, V.; Kang, Min-Sung; Choi, Chel-Jong . (2014). Influence of annealing effects on the electrical and microstructural properties of Se Schottky contacts on n-type GaN. Journal of Materials Science: Materials in Electronics, 25(5), 2379–2386. doi:10.1007/s10854-014-1891-5 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research