@article{HippBuenningMunnesetal.2020,
  author    = {Lena Hipp and Mareike B{\"u}nning and Stefan Munnes and Armin Sauermann},
  title     = {Problems and pitfalls of retrospective survey questions in COVID-19 studies},
  journal   = {Survey research methods},
  volume    = {14},
  number    = {2},
  pages     = {109 -- 113},
  doi       = {10.18148/srm/2020.v14i2.7741},
  year      = {2020},
}