@incollection{B{\"u}chler2015,
  author    = {B{\"u}chler, Jan-Philipp},
  title     = {You'll never walk alone},
  series = {Strategy case book},
  publisher = {K{\"o}lner Wissenschafts-Verlag},
  address   = {K{\"o}ln},
  pages     = {16},
  year      = {2015},
  language  = {en}
}