The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
S. Li et al., “Characterizing Sub-Femtosecond X-ray Pulses from the Linac Coherent Light Source”, in Proc. 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper WEP060, pp. 535-538, ISBN: 978-3-95450-179-3, https://doi.org/10.18429/JACoW-FEL2017-WEP060, 2018.