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Mphuthi, Nokwazi; Botha, Roelf; Forbes, Andrew . (2018).
Are Bessel beams resilient to aberrations and turbulence?. Journal of the Optical Society of America A, 35(6), 1021–.
doi:10.1364/JOSAA.35.001021
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research