@article{VoelkerAkylasAchatz2020,
  author    = {Georg S. V{\"o}lker and Triantaphyllos R. Akylas and Ulrich Achatz},
  title     = {An application of WKBJ theory for triad interactions of internal gravity waves in varying background flows},
  journal   = {Quarterly journal of the Royal Meteorological Society},
  volume    = {147},
  number    = {art. 735},
  pages     = {1112 -- 1134},
  doi       = {10.1002/qj.3962},
  year      = {2020},
}