Jablonski-Lorin, C., M. Nold, A. Bodenmüller, and E. Hungerbühler. “Versatile Approaches to Sugar Amino Acid Building Blocks As Precursors of Glycopeptides: FH - HES”. CHIMIA, vol. 61, no. 5, May 2007, p. 286, doi:10.2533/chimia.2006.286.