“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. 49 (December 1, 2015): 17–50. Accessed November 1, 2026. https://www.journalofscience.org/index.php/GJSFR/article/view/.