@article{SteinerWallmeier1999,
  author    = {Manfred Steiner and Martin Wallmeier},
  title     = {Forecasting the correlation structure of German stock returns: a test of firmspecific factor models},
  journal   = {European Financial Management},
  volume    = {5},
  number    = {1},
  pages     = {85 -- 102},
  doi       = {10.1111/1468-036X.00081},
  year      = {1999},
}