TY JOUR TI ABOUT THE PROSPECTS OF ENERGY-EFFICIENT LIGHT-EMITTING DIODE LIGHTING KW energy conservation KW light-emitting diode lamps KW the overall color rendering index KW luminous flux KW luminous efficacy JO Bulletin of KSAU AU Amuzade, A.S. AU Sizganova, E.Y. AU Petukhov, R.A. PY 2013 IS PB Krasnoyarsk State Agrarian University