J. Urbář, J. Scheirich, J. Jakůbek, R. Švarc, K. Doubner: Coralco: Cosmic rays - light, compact & low-cost device for the real-time radiation environment measurement in the atmosphere and stratosphere. Proceedings paper, In: 61<sup>st</sup> International Astronautical Congress 2010. Paris: International Astronautical Federation (IAF), 2010, pp. 3781-3786. Available from: http://iafastro.directory/iac/archive/browse/IAC-10/E2/3/8918/, 2010.