The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
V.D. Shiltsev, “Considerations on Energy Frontier Colliders After LHC”, in Proc. North American Particle Accelerator Conf. (NAPAC'16), Chicago, IL, USA, Oct. 2016, paper TUPOB07, pp. 493-496, ISBN: 978-3-95450-180-9, https://doi.org/10.18429/JACoW-NAPAC2016-TUPOB07, https://jacow.org/napac2016/papers/tupob07.pdf, 2017.