Brown, S. M., J. Casswell, R. B. Galloway, S. Haddon, and A. Moffat. “Spectral Emission Properties of Some Blue Light-Emitting Diodes”. Ancient TL 17, no. 1 (May 15, 1999): 1–4. Accessed May 2, 2025. https://www.ancienttl.org/article/view/6562.