9[3]Sutariya G, Upadhyay R V, Metha R V. Preparation and Properties of Stable Magnetic Fluid Using.Mn Substituted Ferrite Particles[J] . Journal of Colloid & Inter face Science, 1993, 155:152 - 155.
10[4]Mehta R V, Upadhyay R V, Daxannacharya B A, et al. Magnetic Properties of Laboratory Synthesized Magnetic Fluid and Their Temperature Dependence[J].Journal of Magnetic and Magnetic Materials, 1994,132:153-158.