Howe, J. B. ., and M. J. . Zimmer. “A Commercial Technology Can Help Solve the Reactive Power Capability Problem: Superconducting Magnetic Energy Storage (SMES)”. Distributed Generation &Amp; Alternative Energy Journal, vol. 16, no. 4, Oct. 2001, pp. 61-65, doi:10.13052/dgaej2156-3306.1648.