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Hengstmann, J.H.; Falkner, F.C.; Watson, J.T.; Oates, J., Quantitative determination of guanethidine and other guanido-containing drugs in biological fluids by gas chromatography with flame ionization detection and multiple ion detection, Anal. Chem., 1974, 46, 1, 34-39, https://doi.org/10.1021/ac60337a045 . [all data]