TY JOUR TI THE EFFECT OF THE TYPE OF LAMP AND VOLTAGE SOURCE ON INDUSTRIAL LAMP LIGHT DISTRIBUTION AND EFFICIENT LIGHTING SYSTEM OPERATION KW illuminant KW light intensity curve KW spa-tial isolux KW technique of lighting parameters meas-urement KW light source KW glow lamp KW compact lumi-nescent lamp KW LED lamp KW energy efficiency JO Bulletin of KSAU AU Dolgikh, P.P. AU Dotsenko, D.S. AU Tsuglenok, N.V. PY 2017 IS PB Krasnoyarsk State Agrarian University