V.K S, A.F B, A.V K. Calculation of Resonant Radiation Power of a Direct Sodium Lamp With Low Pressure. IJET [Internet]. 2018 Sep. 7 [cited 2024 May 6];7(3.19):92-6. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/16993