We recomend using the following statement to reference the images that were downloaded from or deposited to IRRMC:
The diffraction images are available on / were deposited to
Integrated Resource for Reproducibility in Macromolecular Crystallography  (http://proteindiffraction.org/)
with DOI:10.18430/M35IIH, DOI:10.18430/M35IIU, DOI:10.18430/M35IIX,
DOI:10.18430/M35IJ5, DOI:10.18430/M35IJE, DOI:10.18430/M35IJF.
Additionally the use of the IRRMC to either deposit or download the datasets should be acknowledged by citing
primary IRRMC publication:
Grabowski M, Langner KM, Cymborowski M, Porebski PJ, Sroka P, Zheng H, Cooper DR, Zimmerman MD, Elsliger MA, Burley SK, Minor W (2016)
A public database of macromolecular diffraction experiments.
Acta crystallographica. Section D, Structural biology 72 (Pt 11):1181-1193.
[Pub Med ID: 27841751]
[Pub Med Central ID: PMC5108346]