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Gerber, Urs; Hofmann, Christoph P.; Kampfer, Florian; Wiese, Uwe-Jens (2010). Microscopic Model versus Systematic Low-Energy Effective Field Theory for a Doped Quantum Ferromagnet. Physical review. B - condensed matter and materials physics, 81(6), p. 64414. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.81.064414