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Bhadra, S., Khastgir, D., Singha, N. K., & Lee, J. H. (2009). Progress in preparation, processing and applications of polyaniline. Progress in Polymer Science, 34(8), 783–810. doi:10.1016/j.progpolymsci.2009.04.003 
10.1016/j.progpolymsci.2009.04.003