Nazarov, S A, D V Gorbach, E A Melnikova, S N Kurilkina, and A L Tolstik. 2018. “Spin-Orbital Conversion of Bessel Light Beams By Liquid Crystal Elements”. KnE Energy 3 (3), 241–248. https://doi.org/10.18502/ken.v3i3.2034.