 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
@unpublished{Schaffer:IPAC2018-TUZGBF2,
  author       = {P. Schaffer and others},
  title        = {{C}yclotron{-B}ased {P}roduction of {M}etallic {R}adionuclides for {M}edical {A}pplication},
  booktitle    = {Proc. of International Particle Accelerator Conference (IPAC'18),
                  Vancouver, BC, Canada, April 29-May 4, 2018},
  language     = {english},
  intype       = {presented at the},
  series       = {International Particle Accelerator Conference},
  number       = {9},
  venue        = {Vancouver, BC, Canada},
  publisher    = {JACoW},
  address      = {Geneva, Switzerland},
  month        = {June},
  year         = {2018},
  note         = {presented at IPAC2018 in Vancouver, BC, Canada, unpublished},
}