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Pan, Yudi; Gao, Lingli; Bohlen, Thomas . (2018). Time-domain full-waveform inversion of Rayleigh and love waves in presence of free-surface topography. Journal of Applied Geophysics, (), S0926985117309242–. doi:10.1016/j.jappgeo.2018.03.006 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research