1. Detection of microstructure characteristics of liquid atmospheric precipitation with the optical rain gage
2. [The Structure of Atmospheric Precipitation],;Litvinov,1974
3. “OTT Parsivel2. Laser optical Disdrometer,” http://www.ott.com/en-us/products/meteorological-sensors/ott-parsivel2-laser-weather-sensor/ (19.06.2016).
4. “OSI. OWI Weather Sensors” http://www.opticalscientific.com/_OSI_Present_Weather_Sensors.html (19.06.2016).
5. “PWD10. Vaisala” http://www.vaisala.com/en/products/visibilitysensors/Pages/PWD1020W.aspx (19.06.2016).