Coating Engineering of MnFe<sub>2</sub>O<sub>4</sub> Nanoparticles with Superhigh <i>T<sub>2</sub></i> Relaxivity and Efficient Cellular Uptake for Highly Sensitive Magnetic Resonance ImagingXiaoli Liu, Yu Tong Wang, Cheng Teng Ng et al.|Advanced Materials Interfaces|2014Cited by 48