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Rhourri-Frih B, Chaimbault P, Claude B, Lamy C, André P, Lafosse M. Analysis of pentacyclic triterpenes by LC-MS. A comparative study between APCI and APPI. J Mass Spectrom. 2009 Jan;44(1):71–80. doi: 10.1002/jms.1472. PMID: 18946879. |