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Kwon, J. , Chung, M. , Oh, T. , Bae, H. , Ju, B.. "Organic Thin Film Transistors based Oligothiophine Derivatives using DZ-Dihexyl(quarter- and sexi-)Thiophene". World Academy of Science, Engineering and Technology, Open Science Index 31, International Journal of Electronics and Communication Engineering (2009), 3(7), 1473 - 1476.