ASSIGNMENT OF THE INDIVIDUAL SHIFTS OF CROWN ETHER DERIVATIVES OF EDTA AND 4'-DANSYLAMINO BENZO CROWN ETHERS' 1H AND 13C NMR SPECTRA
Zhang Anjiang, Wang Shumei, Huang Su, Qing Shenying
Chinese Journal of Magnetic Resonance . 1990, (2): 225 -230 .