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Alexandre I. Rykov; Yutaka Ueda; Kiyoshi Nomura. (2009). Manganite charge and orbitally ordered and disordered states probed by Fe substitution into Mn site in , and (, Gd, Sm, Nd, Pr, La). , 182(8), 2157–2166. doi:10.1016/j.jssc.2009.05.029 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research