Dvořáková, J., Schmidt, D., Huňková, Z., Thiem, J., Křen, V. Enzymatic rearangement of chitooligomer mixture using Beta-N_acetylhexosaminidase from Aspergillus oryzae. In: International Symposium on Biocatalysis and Biotransformation /4./. Naxos: Naxos, 1999, s. 139.