Barnett, S. M., Babiker, M., & Padgett, M. J. (2017). Optical orbital angular momentum. Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences, 375(2087), 20150444. https://doi.org/10.1098/rsta.2015.0444
Chicago Style (17th ed.) CitationBarnett, Stephen M., Mohamed Babiker, and Miles J. Padgett. "Optical Orbital Angular Momentum." Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical, and Engineering Sciences 375, no. 2087 (2017): 20150444. https://doi.org/10.1098/rsta.2015.0444.
MLA (9th ed.) CitationBarnett, Stephen M., et al. "Optical Orbital Angular Momentum." Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical, and Engineering Sciences, vol. 375, no. 2087, 2017, p. 20150444, https://doi.org/10.1098/rsta.2015.0444.