Title: (2S)-2-(3-Oxo-1,4-dioxaspiro-[4.5]decan-2-yl)ethanoic acid.
Journal: Acta crystallographica. Section E, Structure reports online 20080501
Title: Synthesis of acetals and ketals catalyzed by tungstosilicic acid supported on active carbon.
Journal: Journal of Zhejiang University. Science. B 20050501