DOLEŽEL, Ivo, MACH, M., ULRYCH, B. DC Ferromagnetic Actuator for Extremely High Forces. In: WIAK, S., DEMS, M., KOMEZA, K., eds. ICEM 2004. Vol. 2. Lodz: Technical University of Lodz, 2004, s. 417-422. ISBN 83-921428-3-7.