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Srinivas, N.R.; Cooper, J.K.; Hubbard, J.W.; Midha, K.K., Isothermal capillary gas chromatography with electron-capture detection of heptafluorobutyryl-L-prolyl derivatives of chiral amphetamines, J. Chromatogr., 1989, 491, 262-264, https://doi.org/10.1016/S0378-4347(00)82842-X . [all data]