The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
X.L. Su et al., “Measurement of Electron Bunch Length via a Tunable-Gap Undulator”, in Proc. 8th Int. Particle Accelerator Conf. (IPAC'17), Copenhagen, Denmark, May 2017, paper MOPAB075, pp. 295-297, ISBN: 978-3-95450-182-3, https://doi.org/10.18429/JACoW-IPAC2017-MOPAB075, http://jacow.org/ipac2017/papers/mopab075.pdf, 2017.