p. 4325 - 4329
(1998)p. 3379 - 3382
(2007/10/03)citric acid
5-oxo-1,3-dioxolan-4-ylidenedi(acetic acid)
(5-oxo-[1,3]dioxolane-4,4-diyl)-bis-acetic acid dimethyl ester
[-(2-methoxy-2-oxoethyl)-5-oxo-1,3-dioxolan-4-yl]acetic acid
4,4-(5-oxo-1,3-dioxolane)diacetic acid anhydride