According to an e-mail with Robert Cailliau, CERN requires (1) attribution under the form "Photo
en:CERN", and (2) require an e-mail notifying them of the image (
to the press agency). Permission for this picture is stored in
this OTRS ticket
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the
same or compatible license as the original.
This version is released under a more open licence: With permission from photo subject, file now released under CC-BY-SA-4.0 copyright CERN (see https://cds.cern.ch/record/39587) This version is also higher resolution than the original.