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Calculation of
17
O-NMR Chemical Shifts of Carbonyl Groups in Carboxylic Methyl and Ethyl Esters
LI Lin-sheng
1,2
*; LI Li-dong
2
; LAN Yun-jun
1
; XIONG Jing
1
Chinese Journal of Magnetic Resonance . 2006, (
4
): 473 -478 .