Gečys, S., and P. Smolskas. “Copper-Squirrel-Cage Solid Rotor Teeth Zone Parameter Rational”. Elektronika Ir Elektrotechnika, vol. 89, no. 1, Jan. 2009, pp. 91-94, https://eejournal.ktu.lt/index.php/elt/article/view/10585.