@article{Nakamura1998,
  author    = {Nakamura, S.},
  title     = {Polarized Electrons at 3.5 GeV ELSA},
  series = {Proceedings of the 1st Asian Particle Accelerator Conference},
  journal   = {Proceedings of the 1st Asian Particle Accelerator Conference},
  year      = {1998},
  language  = {mul}
}
@article{Nakamura1998,
  author    = {Nakamura, S.},
  title     = {Acceleration of polarized electrons in ELSA},
  series = {Nuclear Instruments and Methods in Physics Research Section},
  journal   = {Nuclear Instruments and Methods in Physics Research Section},
  number    = {A 411},
  pages     = {93 -- 106},
  year      = {1998},
  language  = {en}
}