Clark, N., and A. Sáenz. “The Concentration Dependence of Electrical Resistivity, the Hall Coefficient and the Superconducting Transition Temperature of Pb-In Thin Films”. Revista Mexicana De Física, vol. 36, no. 4, Jan. 1989, pp. 591-5, https://rmf.smf.mx/ojs/index.php/rmf/article/view/2146.