Shahinfard, *Naser S. V. “Carbon Nanotube/Polypyrrole Composites As a Novel Solid Phase Microextraction Fiber Coating for the Preconcentration of N-Alkanes from Aqueous Media”. Journal of Biomedical and Pharmaceutical Research, Vol. 2, no. 2, Apr. 2013, https://jbpr.in/index.php/jbpr/article/view/414.