1. Anonymous Maxilact® lactase-method of assay for activity – ONPG. (Tech. bull.), Enzyme Devel. Corp., 2 Penn Plaza, New York, NY.
2. The enzymatic colorimetric determination of glucose. (Tech. bull.),1976
3. Chemical procedures for enzyme immobilization on porous cellulose beads;Chen;Biotechnol. Bioeng.,1977
4. Secondary phase and mechanism of enzymic milk coagulation;Cheryan;J. Dairy Sci.,1975
5. Hydrolysis of β-galactosidases using polymer entrapped lactase. A study toward producing lactose-free milk;Dahlquist;Biotechnol. Bioeng.,1973