Electrospray ionization tandem mass spectrometry of labdane-type acid diterpenes - Aguiar, Gabriela de Paula; Crevelin, Eduardo José; Dias, Herbert Júnior; Ambrosio, Sérgio Ricardo; Bastos, Jairo Kenupp; Heleno, Vladimir Constantino Gomes; Vessecchi, Ricardo; Crotti, Antonio Eduardo Miller (Journal of Mass Spectrometry, 2018)