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Waugh, D. W.; Oman, L.; Newman, P. A.; Stolarski, R. S.; Pawson, S.; Nielsen, J. E.; Perlwitz, J. . (2009). Effect of zonal asymmetries in stratospheric ozone on simulated Southern Hemisphere climate trends. Geophysical Research Letters, 36(18), L18701–. doi:10.1029/2009gl040419 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research