MASS-SPECTROMETRY STUDY OF LINEAR AND ANGULAR 3',4'-DIOXYSUBSTITUTED DIHYDROPYRANOCOUMARINS AND THEIR DERIVATIVES Article ZAKHAROV P.I., TERENTEV P.B., NIKONOV G.K., AVRAMENKO L.G. KHIMIYA PRIRODNYKH SOEDINENII. AKADEMIYA NAUK UZBEKSKOI SSR. 1977. P. 38-44
VOLTAGE MASS-SPECTRA OF MONOOXYDIHYDROPYRANOCOUMARINS AND MONOACYLOXYDIHYDROPYRANOCOUMARINS AND DIHYDROFUROCOUMARINS Article ZAKHAROV P.I., TERENTJEV P.B., NIKONOV G.K. KHIMIYA PRIRODNYKH SOEDINENII. AKADEMIYA NAUK UZBEKSKOI SSR. 1977. P. 212-215