Vangkilde-Pedersen, T (red.), Allier, D, Anghel, S
, Anthonsen, KL, Bossie-Codreanu, D, Car, M, Donda, F, Dudu, A, Falus, G, Georgiev, G, Hatziyannis, G, Hegedűs, E, Hladik, V, Ivanova, O, Jencsel, H, Kirk, KL, Knopf, Kolejka, V, Kotulová, J, Kucharič, L, Le Nindre, YM, Marina, M, Martinez, R, Maurand, N, May, F, Micevski, E, Neele, F, Nulle, I, Opovski, K, Persoglia, S, Pomeranceva, R, Poulsen, NE, Prifti, I, Proca, A, Saftic, B, Sava, C, Shogenova, A, Shogenov, K, Šliaupiené, R, Sliaupa, S, Suarez, I, Szamosfalvi, A, Tarkowski, R, Uliasz-Misiak, B, Vaher, R, Willscher, B, Wójcicki, A, Xenakis, M, Zapatero, M & Zivkovic, SA 2009,
D16 WP2 Report storage capacity. European Union.