Austin, D., Mullin, N., Bismuto, A., Luxmoore, I., Adawi, A. M., Revin, D. G., Soulby, M., Cockburn, J. W., Jiang, Q., Krysa, A. B., Cullis, A. G., Faist, J., Hobbs, J. K., & Wilson, L. R. (2010). Transmission properties of plasmonic metamaterial quantum cascade lasers. IEEE PHOTONICS TECHNOLOGY LETTERS, 22(16), 1217-1219. https://doi.org/10.1109/LPT.2010.2052595