@article{vietzexxxxlehrbuch,
  title = {Lehrbuch der mongolischen Sprache. 2., durchgesehene aufl},
  author = {VIETZE, Hans Peter},
  xn-author = {vietze, hans peter},
  year = {xxxx},
  keywords = {Mongolia;Language},
  BAS = {635131},
  check = {vietze:xxxx:lehrbuch},
  source = {bas},
}