Characterisation of di- and monosulfated, unsaturated heparin disaccharides with terminal N-sulfated 1,6-anhydro-beta-D-glucosamine or N-sulfated 1,6-anhydro-beta-D-mannosamine residues - Mascellani, G; Guerrini, M; Torri, G; Liverani, L (Carbohydr Res, 2007)