@article {1340644,
	title = {Stereoselective a-Sialylation with Sialyl Xanthate and Phenylsulfenyl Triflate (PST) as a Promotor},
	journal = {J. Org. Chem.},
	volume = {61},
	year = {1996},
	note = {487},
	pages = {1702-1706},
	author = {Martichonok, V. and Whitesides, G. M.}
}
