Enzymatic glycosylation using 6-O-acylated sugar donors and acceptors: β-N-acetylhexosaminidase-catalysed synthesis of 6-O,N,N'-triacetylchitobiose and 6′-O,N,N'-triacetylchitobiose. - Husáková,L.; Riva,S.; Casali,M.; Nicotra,S.; Kuzma,M.; Hunková,Z.; Kren,V. (Carbohydr Res, 2001)