Penner, S., Lorenz, H., Jochum, W., Stöger-Pollach, M., Wang, D., Rameshan, C., & Klötzer, B. (2009). Pd/Ga₂O₃ methanol steam reforming catalysts: Part I. Morphology, composition and structural aspects. Applied Catalysis A: General, 358(2), 193–202. https://doi.org/10.1016/j.apcata.2009.02.026