The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
X. Permanyer, “An Overview of the European Spallation Source”, presented at the 9th\ Edit.\ of\ the\ Mech.\ Eng.\ Des.\ of\ Synchrotron\ Radiat.\ Equip.\ and\ Instrum.\ Conf. (MEDSI'16), Barcelona, Spain, Sep. 2016, paper TUCA07, unpublished.