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