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van Mansvelt, F.J.W.; Greving, J.E.; de Zeeuw, R.A., Identification of Ergot-Peptide Alkaloids, Based on Gas-Liquid Chromatography of the Peptide Moiety, J. Chromatogr., 1978, 151, 2, 113-120, https://doi.org/10.1016/S0021-9673(00)85375-3 . [all data]