@article{BecherGenaAlsaadetal.2021,
  author    = {Lia Becher and Amayu Wakoya Gena and Hayder Alsaad and Bernhard Richter and Claudia Spahn and Conrad V{\"o}lker},
  title     = {The spread of breathing air from wind instruments and singers using schlieren techniques},
  journal   = {Indoor Air},
  volume    = {2021},
  number    = {volume 31, issue 6},
  pages     = {1798 -- 1814},
  doi       = {10.1111/ina.12869},
  url       = {https://onlinelibrary.wiley.com/doi/full/10.1111/ina.12869},
  year      = {2021},
}