Akachi, T., R. Barrio, and and G. Ramírez. “Magnetization of Cyilindrical Hard Superconductors in Longitudinally Applied Magnetic Fields”. Revista Mexicana De Física, vol. 27, no. 2, Jan. 1980, pp. 143-67, https://rmf.smf.mx/ojs/index.php/rmf/article/view/1160.