Leedy, Aleck W., and M. Andia Karanja. “Analysis of Power Spectral Density As a Diagnostic Tool in PEM Fuel Cells With Pulsed Loads”. Electrical Engineering and Energy (September 7, 2026): 416–430. Accessed September 10, 2026. https://www.jelene.org/index.php/elene/article/view/82.