8Carlson J D.MR fluids and devices in the real world[.International Journal of Modern Physics B, 2005,19:7-9.
9Kormann C Laun H M, Richter H J.MR suspensions and associated technology.Bullogh W A ed.Proc, of the 5th Int. Conf. on ER Fluids,Singapore:World Scientific, 1996.