Hudgins, J L, Bogart, Jr, T.F., Mayaram, K, Kennedy, M. P, Kolumban, G. " Nonlinear Circuits The electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton: CRc Press llc. 2000Hudgins, J.L., Bogart, Jr., T.F., Mayaram, K., Kennedy, M.P., Kolumbán, G. “Nonlinear Circuits” The Electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton: CRC Press LLC, 2000