1. Abela, R. et al. XFEL: The European X-Ray Free-Electron Laser - Technical Design Report (DESY, 2006).
2. Mishin, A. V. Advances in X-band and S-band linear accelerators for security, NDT, and other applications. In Proc. Particle Accelerator Conference 2005 (ed. Horak, C.) 240–244 (JACoW Publishing, Geneva, 2005).
3. Lee, Y. S. et al. Development of side-coupled X-band medical linear accelerator for radiotherapy. In Proc. Linear Accelerator Conference 2018 (eds Pei, G. et al.) 139–141 (JACoW Publishing, Geneva, 2019).
4. Accardi, A. et al. Electron ion collider: the next QCD frontier. Eur. Phys. J. A 52, 268 (2016).
5. Agostini, P. et al. The Large Hadron–Electron Collider at the HL-LHC. J. Phys. G 48, 110501 (2021).