Please refer also to the use of the DESY photon facility. All publications have to contain a corresponding sentence, which is listed here: DESY Photon Science User's Guide for publication and reports.
The publication, which describes P66:
Y. Smortsova, O. Chukova, M. Kirm, V. Nagirnyi, V. Pankratov, A. Kataev and A. Kotlov The P66 time-resolved VUV spectroscopy beamline at PETRA III storage ring of DESY, Journal of Synchrotron Radiation, Volume 32, Part 6 (2025), DOI:
https://doi.org/10.1107/S1600577525007568