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
MASS-SPECTRA OF CHEMICAL IONIZATION OF NATURAL MONOXY AND MONOACYLOXYDIHYDROPYRANO AND DIHYDROFUROCOUMARINS Article MEDVEDEV F.A., ZACHAROV P.I., TERENTEV P.B., NIKONOV G.K. KHIMIYA PRIRODNYKH SOEDINENII. AKADEMIYA NAUK UZBEKSKOI SSR. 1977. P. 508-512