@misc{slavicek2011portable,
  author = {Slav{\'i}{\v{c}}ek, T. and Kroupa, M. and Posp{\'i}{\v{s}}il, S. and Solar, M. and Krej{\v{c}}{\'i}, F. and Granja, C. and Janout, Z. and Ku{\v{c}}a, {\v{C}}.},
  title = {Portable Calibration Gamma-Ray Source},
  year = {2011},
  note = {Functional sample}
}