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S. K. Misra; S. I. Andronenko. (2007). A Variable-Temperature X-Band EPR Study of the Gd3+Ion in a La2Si2O7Crystal Characterized by Monoclinic Site Symmetry. , 32(3), 377–384. doi:10.1007/s00723-007-0020-5 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research