WallerG.R.DermerO.C. (Eds), Biochemical Applications of Mass Spectrometry, 1st Suppl. Vol. John Wiley & Sons, New York, pp. 1155–1156 (1980)
6.
HesseM.MeierH.ZechB., Spektroskopische Methoden in der Organischen Chemie.Thieme, Stuttgart, pp. 314–317 (1984).
7.
Further references on mass spectra of isocoumarins: LewisC.N.StauntonJ.SunterD.C., J. Chem. Soc., Perkin Trans.747 (1988); OliverM.A.GandourR.D., J. Org. Chem.49, 558 (1984); BellingerG.C.A.CampbellW.E.GilesR.G.F., J. Chem. Soc., Perkin Trans.2819 (1982).
8.
McLaffertyF.W., Interpretation of Mass Spectra.Benjamin, London, pp. 314–317 (1973).