1. J. Barclay, W. Steyert, Active magnetic regenerator, 1982, US Patent 4,332,135.
2. A gadolinium–terbium active regenerator;Green;Advances in Cryogenic Engineering,1990
3. Description and performance of a near-room temperature magnetic refrigerator;Zimm;Advances in Cryogenic Engineering,1998
4. Development of magnetic refrigeration for room temperature applications;Hirano;Advances in Cryogenic Engineering,2002
5. C. Zimm, Rotating bed magnetic refrigeration apparatus, 2003, US Patent 6,526,759.