@Article{langer2000botryobasidium,
  author = {Langer, G. and Langer, E. and Chen, C.-J.},
  title  = {Botryobasidium musaisporum sp. nov. collected in Taiwan},
  journal = {Mycol. Res},
  year   = {2000},
  number = {4},
  url    = {},

  const  = {\ text}
}
@Book{Chen99,
  author = {Chen, C.},
  title  = {Information Visualisation and Virtual Environments},

  year   = {1999},
  number = {},
  url    = {},

  const  = {\ text}
}