@misc{GPS_ublox,
  title = {National Operational Hydrologic and Remote Sensing Center},
  note = {UBLOX. LEA-6 series [online]. 2013 [cit. 2013-05-12]},
  howpublished = {\url{http://www.u-blox.com/en/gps-modules/pvt-modules/lea-6-family.html}},
}

@misc{automacic_balloon_launcher,
  title = {A Cost Effective Automatic Balloon Launcher},
  note = {},
  howpublished = {\url{http://www.osti.gov/bridge/purl.cover.jsp?purl=/768881-IVNrhd/native/768881.pdf}},
}

@misc{miniature_resistor,
  title = {ROYAL OHM MFF04FF0100A5 - Rezistor: metal film; THT; 10 $\Omega$; 0,4W; $\pm$1\%;1,9x3,7mm;},
  note = {},
  howpublished = {\url{http://www.tme.eu/cz/details/m0.4w-10r/metalizovane-rezistory-tht-04w/royal-ohm/mff04ff0100a5/#}},
}

@misc{cement,
  title = {síť CEMeNt},
  note = {},
  howpublished = {\url{http://cement.fireball.sk/}},
}

@misc{PE_balony_mogul,
  title = {projekt Mogul},
  note = {},
  howpublished = {\url{http://en.wikipedia.org/wiki/Project_Mogul}},
}

@misc{Parafoil_Return_Vehicle,
  title = {Autonomous Parafoil Return Vehicle},
  note = {},
  howpublished = {\url{http://mbed.org/users/lhiggs/notebook/autonomous-parafoil-return-vehicle/}},
}

@misc{radiosondy_lovci_EU,
  title = {La chasse aux radiosondes par radiogoniométrie},
  note = {},
  howpublished = {\url{http://www.radiosonde.eu/}},
}

@misc{radiosondy_lovci_SK,
  title = {Stánka nadšenců pro hledání radiosond},
  note = {},
  howpublished = {\url{http://www.radiosonda.sk/}},
}