Unknown
Pedersoli, E
;
Loh, N D
;
Capotondi, F
;
[et al.]
Hampton, C Y
;
Sierra, R G
;
Starodub, D
;
Bostedt, C
;
Bozek, J
;
Nelson, A J
;
Aslam, M
;
Li, S
;
Dravid, V P
;
Martin, A V
;
Aquila, A
;
Barty, A
;
Fleckenstein, H
;
... and further 46
Institute of Physics