@misc{Seiler1969,
  author    = {Hansjakob Seiler},
  title     = {Zur Problematik des Verbalaspekts},
  booktitle = {Institut f{\"u}r Sprachwissenschaft, Universit{\"a}t K{\"o}ln: Arbeitspapier ; Nr. 7},
  issn      = {1615-1496},
  series    = {Arbeitspapier / Institut f{\"u}r Sprachwissenschaft, Universit{\"a}t K{\"o}ln},
  number    = {A.F. 7},
  type      = {workingpaper},
  pages     = {18},
  year        = {1969},
}