W. He, X. Hu, Z. Li, X. Chen, and M. Liu, “Vortex-Shaking-Assisted and Supramolecular Solvent-Based Microextraction Followed by HPLC-FLD Determination of Benzo(a)pyrene in Water Samples”, ajc, vol. 25, no. 16, pp. 9216–9220, Oct. 2013.