Tadayon, F. , Hassanlou, E. , Bagheri, H. , Jafarian, M. (2016). 'Ligandless Extraction and Determination of Trace Amounts of Lead in Pomegranate, Zucchini and Lettuce Samples after Dispersive Liquid-Liquid Microextraction with Ultrasonic Bath and Optimization of Extraction Condition with RSM Design'. World Academy of Science, Engineering and Technology, Open Science Index 115, International Journal of Nutrition and Food Engineering, 10(7), 876 - 879.