Nelson, James T. (1955). "Chicago Section: 1. Electrical and optical properties of MgPSn and Mg2Si". American Journal of Physics. 23 (6). American Association of Physics Teachers (AAPT): 390. doi:10.1119/1.1934018. ISSN0002-9505.
Nelson, James T. (1955). "Chicago Section: 1. Electrical and optical properties of MgPSn and Mg2Si". American Journal of Physics. 23 (6). American Association of Physics Teachers (AAPT): 390. doi:10.1119/1.1934018. ISSN0002-9505.