Guan, Yang, Zhu, Z. Q., Li, Guang-Jin, Azar, Ziad, Thomas, Arwyn S., Vedreño-Santos, Francisco, Odavic, M., "Influence of pole number and stator outer diameter on volume, weight and cost of superconducting generator with iron-cored rotor topology for wind turbines.", IEEE Transactions on Applied Superconductivity, 2017