J.B.Gupta E4.3, . (1998). Electrical Machines. Delhi: S.K.Kataria & Sons.
J.B.Gupta E4.3, . 1998. Electrical Machines. Delhi: S.K.Kataria & Sons.
J.B.Gupta E4.3, . Electrical Machines. Delhi: S.K.Kataria & Sons. 1998.