1. www.cea.fr/technologies/les_lasers_au_cea/l_interaction_laser-matiere
2. www.extreme-light-infrastructure.eu/
3. http://ec.europa.eu/research/infrastructures/index_en.cfm?pg=eli
4. ec.europa.eu/research/infrastructures/index_en.cfm?pg=esfri
5. Principles and applications of compact laser–plasma accelerators