Coil-EEFL Tube as Supreme Incandescent Light Source with Zero Electric Power Consumption, Astronomical Quantum Efficiency, and Long Life. GJSFR [Internet]. 2016 Jan. 15 [cited 2026 Sep. 20];15(A8):17-50. Available from: https://journalofscience.org/index.php/GJSFR/article/view/2435