[2] Cinquina A L, Longo F, Anastasi G, et al. Journal of Chromatography A, 2003, 987(1-2): 227.
[3] Muriuki F K, Ogara W O, Njeruh F M, et al. Journal of Veterinary Science, 2001, 2(2): 97.
[4] Kurittu J, Lonnberg S, Virta M, et al. Journal of Agricultural and Food Chemistry, 2000, 48(8): 3372.
[5] Cherlet M, De Baere S, De Backer P. Analyst, 2003, 128(7): 871.
[6] Choma I M. Journal of Planar Chromatography, 2000, 13(4): 261.