@article{FreiOppenlaender,
  author    = {Bruno Frei and Thomas Oppenl{\"a}nder},
  title     = {EPA European Photochemistry Association: Summer School on Photochemistry, Spiez, Switzerland, July 30 - August 5, 1989},
  series = {Swiss Pharma},
  volume    = {11},
  number    = {12},
  issn      = {0251-1673},
  pages     = {7 -- 9},
  language  = {en}
}