Kouznetsov, D., E. Le, -Koo., ., and G. Villa-Torres. “Aharonov-Bohm Effect on the Bound States of an Electron Inside an Annular Cylindrical Box”. Revista Mexicana De Física, vol. 45, no. 5, Jan. 1999, pp. 485-9, https://rmf.smf.mx/ojs/index.php/rmf/article/view/2897.