The influence of artificial illumination of invar levelling rods on the measurements with digital levels - Rákay, Štefan (Geodetski vestnik, 2018)
Keywords: bar code rod; digital level; digitalni nivelir; kodirana invar nivelmanska lata; precise levelling; precise levelling rods; precizni nivelman; sistematični pogreški niveliranja; systematic errors in levelling