@article{BrandSchweizerPlessner2009,
  author    = {Brand, Ralf and Schweizer, Geoffrey and Plessner, Henning},
  title     = {Conceptual considerations about the development of a decision-making training method for expert soccer referees},
  isbn      = {978-1-60692-390-0},
  year      = {2009},
  language  = {en}
}
@article{PlessnerSchweizerBrandetal.2009,
  author    = {Plessner, Henning and Schweizer, Geoffrey and Brand, Ralf and O'Hare, David},
  title     = {A multiple-cue learning approach as the basis for understanding and improving soccer referees' decision making},
  isbn      = {978-0-444-53356-2},
  year      = {2009},
  language  = {en}
}