He, D Use of a quartz crystal impedance technique to monitor the degradation of chondroitin sulfate by hyaluronidase. [electronic resource] - Enzyme and microbial technology Jul 2001 - 84-89 p. digital Publication Type: Journal Article ISSN: 1879-0909 Standard No.: 10.1016/s0141-0229(01)00353-2 doi