Identification and structural analysis of the tetrasaccharide NeuAc alpha(2-->6)Gal beta(1-->4)GlcNAc beta(1-->3)Fuc alpha 1-->O-linked to serine 61 of human factor IX. (1993)

Harris R, van Halbeek H, Glushka J, Basa L, Ling V, Smith K, Spellman M
Biochemistry, 1993 vol.32:6539-6547