@misc{vlasek2012portable,
  author = {Vl{\'a}{\v{s}}ek, J. and Kouba, P. and Pet{\v{r}}{\'i}k, Milan and Mamedov, F. and {\v{S}}tekl, I. and P{\v{r}}idal, P.},
  title = {Portable {USB} spectrometer for detection of radon},
  year = {2012},
  note = {Functional sample}
}