E. Karaoğlu, H. Deligöz, H. Sözeri, A. Baykal, and M. S. Toprak, “Hydrothermal Synthesis and Characterization of PEG-Mn3O4 Nanocomposite”, Nano-Micro Lett, vol. 3, no. 1, pp. 25-33, Apr. 2011.