T. T. Chuong, T. V. Anh, T. Q. Tho, and T. Deveikis, “Research of the Voltage Stability of Distribution Network Connected Induction Machines”, ELEKTRON ELEKTROTECH, vol. 21, no. 1, pp. 42–47, Feb. 2015, doi: 10.5755/j01.eee.21.1.9804.