WASET
Monji, A. , Yousefnia, H. , Zolghadri, S. , Salimi, B.. "A Comparison between Reagents Extracted from Tree Leaves for Spectrophotometric Determination of Hafnium(IV)". World Academy of Science, Engineering and Technology, Open Science Index 135, International Journal of Chemical and Molecular Engineering (2018), 12(3), 120 - 123.