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Leonardo Agudo; Dominique Eyidi; Christian H. Schmaranzer; Enno Arenholz; Nasrin Jank; Jürgen Bruckner; Anke R. Pyzalla. (2007). Intermetallic FexAly-phases in a steel/Al-alloy fusion weld. , 42(12), 4205–4214. doi:10.1007/s10853-006-0644-0 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research