“Coil-EEFL Tube As Supreme Incandescent Light Source With Zero Electric Power Consumption, Astronomical Quantum Efficiency, and Long Life”. Global Journal of Science Frontier Research 15, no. A8 (January 15, 2016): 17–50. Accessed September 20, 2026. https://journalofscience.org/index.php/GJSFR/article/view/2435.