WASET
Wu, J. , Hu, R. , Yue, J. , Yang, Z. , Zhang, L.. "Study on the Derivatization Process Using N-O-bis-(trimethylsilyl)-trifluoroacetamide,N-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide, Trimethylsilydiazomethane for the Determination of Fecal Sterols by Gas Chromatography-Mass Spectrometry". World Academy of Science, Engineering and Technology, Open Science Index 20, International Journal of Chemical and Molecular Engineering (2008), 2(8), 187 - 190.