Pandiyarajan Thangaraj and  Mangalaraja Ramalinga Viswanathan and  Karthikeyan Balasubramanian and  Héctor D. Mansilla and  José Ruiz and  David Contreras,  Structural and Optical Properties of Pr3+ Doped ZnO and PVA:Zn98Pr2O Nanocomposite Free Standing Film.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 97(1). 225 - 229
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