Popmintchev, T., Popmintchev, D., Chen, M.-C., Siqueira, J. P., Hernández-García, C., Pérez-Hernández, J. A., Plaja, L., Becker, A., Jaron-Becker, A., Alisauskas, S., Andriukaitis, G., Pugzlys, A., Baltuska, A., Murnane, M. M., & Kapteyn, H. C. (2012). Unified Microscopic-Macroscopic Picture of High Harmonic Generation from the VUV to the keV X-ray Region. In 2012 Conference on Lasers and Electro-Optics (CLEO) (pp. 1–2). OSA. https://doi.org/10.1364/CLEO_SI.2012.CF1L.2